An alarm clock (alarm for short) is a clock that is designed to alert an individual or group of individuals at specified time. The primary function of these clocks is to awaken people from their night's sleep or short naps; they are sometimes used for other reminders as well. Most use sound; some use light or vibration. Some have sensors to identify when a person is in a light stage of sleep, in order to avoid waking someone who is deeply asleep, which causes tiredness, even if the person has had adequate sleep. To stop the sound or light, a button or handle on the clock is pressed; most clocks automatically stop the alarm if left unattended long enough. A classic analog alarm clock has an extra hand or inset dial that is used to specify the time at which to activate the alarm. Alarm clocks are also found on mobile phones, watches, and computers.
If the only thing that will get you out the door in the morning is some serious nagging, Clockman is for you. This chatty clock refuses to shut up, even after you get out of bed. He'll greet you at your desired time, sing while you get dressed, and even yell if you anger him. While Clockman speaks only Japanese for now, his wake-up-and-get-going message isn't lost in translation.
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This is the number-one selling kid's clock on Amazon, with more than 2,500 reviews. Parents rave about the restoration of their sleep time. Many parents say it "saved me from my early riser! Life changing!" Even parents of older children with developmental delays found the clock very useful in indicating to non-readers when it's okay to get up, and when it's not.
Not just for keeping your eye on the hour, this eye-catching wall clock lends a touch of retro flair to your ensemble in seconds. Measuring 9.5'' in diameter (so you know it'll fit just about anywhere), this piece pairs a glossy iron frame with a traditional analog dial. This product requires one AA battery to operate, which is not included. The manufacturer for this item provides a limited one-year warranty.
Get the reliability you need without sacrificing style. Get the reliability you need without sacrificing style. The Analog Quartz Mantel Alarm Clock from La Crosse Clock Co. is a traditional beeping alarm clock. It has the added bonus of luminous hands for easy nighttime viewing. The classic design features a black matted frame with black metal hands and ...  More + Product Details Close

You can choose from an analog styled clock to a digital one. Our alarm clocks can vary from old, retro, 1950 styled clocks to modern 2013. Depending on your desire, we have wind up alarm clocks, clocks that do or do not tick, or clocks with or without a built in radio. We have clocks for children, clocks that run on battery, or ones that plug directly into an outlet.

"Not bad...Love it...This alarm clock is perfect for anyone looking to charger your phone wireless and also has a USB to charger anything you want I have it to charger my gear S3 I also like that it's Bluetooth so I can play music and pick up phone call so I will Recommend this alarm clock to anyone looking to do the same thing I do with it I didn't talk about the alarm it's self because it like any other alarm set it up to Wake you up and it does its job...This is a nice alarm clock and also a decent Bluetooth radio however the reason I picked this up was for the wireless charger for the iPhone X. Regardless of the position the charger flashes on and off in a matter of seconds."
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If you’ve never seen an alarm clock that can project the time onto the wall, you may be surprised at how handy this function can be. This Mesqool clock can project the time onto the ceiling, the curtains, or just about any other surface, thanks to the 180-degree swivel. So instead of squinting at the clock through sleepy eyes in the morning, you can just look up at the ceiling. The clock also includes AM/FM Radio, so you can listen to your favorite morning talk shows or follow along with your sports team while you get ready in the morning.
Until advances in the late twentieth century, navigation depended on the ability to measure latitude and longitude. Latitude can be determined through celestial navigation; the measurement of longitude requires accurate knowledge of time. This need was a major motivation for the development of accurate mechanical clocks. John Harrison created the first highly accurate marine chronometer in the mid-18th century. The Noon gun in Cape Town still fires an accurate signal to allow ships to check their chronometers. Many buildings near major ports used to have (some still do) a large ball mounted on a tower or mast arranged to drop at a pre-determined time, for the same purpose. While satellite navigation systems such as the Global Positioning System (GPS) require unprecedentedly accurate knowledge of time, this is supplied by equipment on the satellites; vehicles no longer need timekeeping equipment.
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Versatile style abounds with this wood and metal wall clock, showcasing a wine barrel-inspired design. Its plank details pair perfectly with rustic decor while its rivet accents match with industrial options and factory-inspired furniture. Add it to the dining room to complement a cozy loft ensemble or use it to round out a bold boho look in the den. Its round silhouette adds traditional flair to both formal and casual aesthetics while its natural hues blend effortlessly into any color palette....
An artful accent is all your need to take your entertaining space from every day to eye-catching. While low-slung sofas and a plush shag rug make a fine foundation, you can effortlessly dress it all up by centering this chic clock on the wall above. Pairing brushed aluminum metal with walnut-finished wood panels, this sunburst-inspired piece is brimming with mid-century style. Let it shine solo above an exposed light bulb lamp sitting on an end table so you can watch the time at your pre-dinner...
A clock that looks good and runs smoothly instantly adds charm and functionality to your living space. For a fresh take on the traditional wall clock, consider this eye-catching design. Introducing Ribbonwood by Umbra Add a modern, minimalist twist to telling time. With Ribbonwood, you get a stylish piece of wall décor and a functional wall clock all-in-one. Made with natural beech wood that’s been shaped to resemble overlapping ribbons, this unique clock features contrasting hands that...
A minimalist twist on the traditional wall clock. Resolve to find contentment with the time you are given, without obsessing over the numbers. Feel things you have never felt before. Experience different points of view. Make the best of it. Live a life you are proud of. Discover the value of time with The Adam Schwoeppe Minimalist Circle Clock, an elegant eclectic timepiece. Revitalize your home decor as time passes silently with this modern black circle clock.

A clock radio is an alarm clock and radio receiver integrated in one device. The clock may turn on the radio at a designated time to wake the user, and may also include a buzzer. Typically, they are placed on the bedside stand. Some models offer dual alarm and "snooze", a large button on the top that stops the alarm and sets it to ring again a few minutes later.[18] Some clock radios also have a "sleep" timer, which turns the music from radio on for a set amount of time (usually around one hour). This is useful for people who like to fall asleep with the radio on.


A major stimulus to improving the accuracy and reliability of clocks was the importance of precise time-keeping for navigation. The position of a ship at sea could be determined with reasonable accuracy if a navigator could refer to a clock that lost or gained less than about 10 seconds per day. This clock could not contain a pendulum, which would be virtually useless on a rocking ship. In 1714, the British government offered large financial rewards to the value of 20,000 pounds,[42] for anyone who could determine longitude accurately. John Harrison, who dedicated his life to improving the accuracy of his clocks, later received considerable sums under the Longitude Act.

If you've moved away from using a clock completely and instead set an alarm on your phone, consider the SmartShaker by iLuv. The device slides under your pillow and shakes you awake when your phone alarm goes off (it connects wirelessly using bluetooth). You can also have the device sound an audible alarm. The battery lasts a full month before needing to be charged.


For light sleepers, audio alarms can be rather jarring. Fortunately, the Philips Morning Wake-Up Light uses a warm, gentle glow and natural sound effects rather than incessant beeping to get you out of bed. The alarm clock also features a colored sunrise simulation and 20 brightness settings for optimal customization. The light slowly increases in brightness between 20 and 40 minutes prior to your desired alarm time. The clock helps you drift to sleep, too. Instead of you simply turning out the lights and settling into bed, the light-responsive dimming feature gently guides you to sleep with audio accompaniment. This type of alarm is definitely not for everyone, but it is suitable for those who prefer to wake up gradually. For more details, read our full Philips Wake-Up Light review.
This Extra Large wall clock is 42 inch in diameter. This oversized retro gallery wall clock is an adaptation of a classic 1940s George Nelson design. The center is finished in brushed nickel and is surrounded by 12 screw on black satin balls on screw on nickel finished rods. Black satin finished hour and minute hands. Quartz, battery operated movement. Finished in Brushed Nickel Finished with Satin Black Movement: Quartz, Battery-operated Movement uses one AA battery. One year warranty and free shipping.

With the application of the synchronous electric motor to clocks in 1918, domestic electric clocks became popular. A synchronous electric motor runs in step with the frequency of the electric power source, which in most countries alternates at 60 hertz (cycles per second). The electric motor is coupled to a reduction gearing that drives the clock hands at the correct rate.


"Stripe Clock" is a modern metallic design created by the artist, Belle. Measured at 24 inches on each side, this metal art is made from a single sheet of metal expertly grinded and tinted and made in to a functional clock. It is mainly characterized by the bright stripe in the middle of the sheet of metal. Each stroke and grind pattern on this piece accentuates the beauty of the plain sheet of metal. The glimmer coming from the shallow grinds are like street lights illuminating the city in the...

Taking cues from vintage timepieces, this classic round alarm clock ticks boxes for both fashion and function. Measuring just 7.7'' H x 5'' W x 2.3'' D overall, this petite piece is perfectly proportioned to sit on a nightstand, and it makes a subtle ticking sound to provide white noise as you snooze. A metallic finish on the frame offers a bit of sleek style, while twin bells up above help wake you up and keep you on time.
Alarm clocks are perfect for your nightstand or bedside table to make sure that you wake up on time. There are many different kinds of alarm clocks, ranging from digital clocks, analog clocks to projection clocks. Originally, clocks had difficulty with precision because they used a set of imprecise internal gears. Now, atomic alarm clocks are the perfect solution if you are looking for a clock that will get you to work on time. The best alarm clock depends on your needs and personal style. You should consider your purpose behind purchasing an alarm clock before making your selection.
Time flies when you’re having fun, and you’re going to have a great time updated your look with this chic clock. As much an accent as it is a functional tool, this elegant design will instantly elevate any tabletop display. This clock blends modern minimalism with a pop of glam thanks to its solid-toned background, simple white hour marks, and glossy metallic frame. Try setting it on your master suite nightstand, so you can keep your eye on the time during your morning routine. Next, lean...
Not just for keeping your eye on the hour, this eye-catching wall clock lends a touch of retro flair to your ensemble in seconds. Measuring 9.5'' in diameter (so you know it'll fit just about anywhere), this piece pairs a glossy iron frame with a traditional analog dial. This product requires one AA battery to operate, which is not included. The manufacturer for this item provides a limited one-year warranty.

The timekeeping part of all weight-driven clocks, including large tower clocks, is substantially the same. The figure shows the mechanism of a simple weight-driven timepiece with a pendulum. The frame is made up of two plates that carry the pivots of the various wheels and other moving parts and that are united and spaced by four pillars. The driving weight hangs from a line coiled around a barrel or sprocket, which is raised by turning the winding square or, in some cases, by pulling on the line. The main wheel engages with the centre pinion, on the arbor (axle) of which is also mounted the centre wheel. The front pivot of this wheel and pinion is lengthened to the right of the illustration; it carries the minute hand and part of the gearing necessary to drive the hour hand.


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The primary purpose of a clock is to display the time. Clocks may also have the facility to make a loud alert signal at a specified time, typically to waken a sleeper at a preset time; they are referred to as alarm clocks. The alarm may start at a low volume and become louder, or have the facility to be switched off for a few minutes then resume. Alarm clocks with visible indicators are sometimes used to indicate to children too young to read the time that the time for sleep has finished; they are sometimes called training clocks.
The Howard Miller Brassworks II 625-569 is an over-sized, large wall clock showcases a distressed red dial with metal outer frame finished in antique black with brass undertones and highlights. The dial features aged iron-finished gears viewed through an open center. The spade hour and minute hands are finished in antique black with brass undertones and an antique black-finished gear in the center rotates. Quartz, battery-operated movement requires 1 AA battery. One year warranty and Free Shipping.
For light sleepers, audio alarms can be rather jarring. Fortunately, the Philips Morning Wake-Up Light uses a warm, gentle glow and natural sound effects rather than incessant beeping to get you out of bed. The alarm clock also features a colored sunrise simulation and 20 brightness settings for optimal customization. The light slowly increases in brightness between 20 and 40 minutes prior to your desired alarm time. The clock helps you drift to sleep, too. Instead of you simply turning out the lights and settling into bed, the light-responsive dimming feature gently guides you to sleep with audio accompaniment. This type of alarm is definitely not for everyone, but it is suitable for those who prefer to wake up gradually. For more details, read our full Philips Wake-Up Light review.
This 33" metal wall clock features an antique nickel-finished frame is 7" wide and curves down from the face to the wall hiding the almost 3" in depth. The frame also features 100 decorative nail heads in two rows one on the inside of the frame and one on the outside of the frame.The accurate Quartz movement is operated by one AA battery. One year warranty and Free Shipping.
The timekeeping part of all weight-driven clocks, including large tower clocks, is substantially the same. The figure shows the mechanism of a simple weight-driven timepiece with a pendulum. The frame is made up of two plates that carry the pivots of the various wheels and other moving parts and that are united and spaced by four pillars. The driving weight hangs from a line coiled around a barrel or sprocket, which is raised by turning the winding square or, in some cases, by pulling on the line. The main wheel engages with the centre pinion, on the arbor (axle) of which is also mounted the centre wheel. The front pivot of this wheel and pinion is lengthened to the right of the illustration; it carries the minute hand and part of the gearing necessary to drive the hour hand.
Though no longer our first pick of timepiece thanks to the smart phone, this old-fashioned clock still scores points for form. Measuring 6.25'' H x 2.5'' W x 5'' D, this compact clock’s face is encased in a metal case with a brushed nickel finish and convex glass lens, while its faded dial stays in step with vintage styling. This item is battery operated, but does not emit a loud ticking noise, so you can snooze to your heart's content.
Minimalist design and modern style combine in this 11" wall clock. Set under a clear glass lens on chrome posts, the streamlined dial showcases chrome military indicators on the 12, 3, 6, and 9 over a warm brown woodgrain background, while the unadorned face of the clock takes the form of a brushed metal disk. Operated by a AA battery (not included), a quartz crystal movement keeps the simple baton hour, minute, and second hands ticking away in time.
In Europe, between 1280 and 1320, there is an increase in the number of references to clocks and horologes in church records, and this probably indicates that a new type of clock mechanism had been devised. Existing clock mechanisms that used water power were being adapted to take their driving power from falling weights. This power was controlled by some form of oscillating mechanism, probably derived from existing bell-ringing or alarm devices. This controlled release of power—the escapement—marks the beginning of the true mechanical clock, which differed from the previously mentioned cogwheel clocks. Verge escapement mechanism derived in the surge of true mechanical clocks, which didn't need any kind of fluid power, like water or mercury, to work.
Whether you’re styling an accent wall or rounding out your decor, a retro-inspired wall clock like this one draws the eye while adding some utility to your ensemble. The large numbers make this clock easy to read, and with quartz movement, it features a more accurate reading. The minimalist black and white face and the sleek silver frame imbue it with contemporary appeal, making this piece easy to hang in a variety of design styles. Measures 15'' in diameter.
Many devices can be used to mark passage of time without respect to reference time (time of day, minutes, etc.) and can be useful for measuring duration or intervals. Examples of such duration timers are candle clocks, incense clocks and the hourglass. Both the candle clock and the incense clock work on the same principle wherein the consumption of resources is more or less constant allowing reasonably precise and repeatable estimates of time passages. In the hourglass, fine sand pouring through a tiny hole at a constant rate indicates an arbitrary, predetermined, passage of time. The resource is not consumed but re-used.
For some scientific work timing of the utmost accuracy is essential. It is also necessary to have a standard of the maximum accuracy against which working clocks can be calibrated. An ideal clock would give the time to unlimited accuracy, but this is not realisable. Many physical processes, in particular including some transitions between atomic energy levels, occur at exceedingly stable frequency; counting cycles of such a process can give a very accurate and consistent time—clocks which work this way are usually called atomic clocks. Such clocks are typically large, very expensive, require a controlled environment, and are far more accurate than required for most purposes; they are typically used in a standards laboratory.

The naysayers might note that your cell phone alarm can already be set to vibrate, so why not just slip your smartphone under your pillowcase? All sanitary arguments aside, the SmartShaker 2 vibrates much more powerfully than a standard smartphone (three times more to be exact). The SmartShaker 2 also connects to your smartphone via Bluetooth and incorporates a functional, easy-to-use app that’s available for both Android and iOS devices. You can even set up to 10 different alarms and choose from an array of options, just in case you want an audio alarm as well as a vibration. After all, sometimes the snooze struggle is all too real.


Here at the Strategist, we like to think of ourselves as crazy (in the good way) about the stuff we buy (like pillows), but as much as we’d like to, we can’t try everything. Which is why we have People’s Choice, in which we find the best-reviewed (that’s four-to-five-star reviews and lots of ‘em) products and single out the most convincing. While we’ve tried to find the nicest-sounding alarm clocks and ended up with picks for the best alarm clock and a voice-controlled alarm clock, we wanted to see what other ways to wake up were out there. So we found the best alarm clocks on Amazon, according to hyperenthusiastic reviewers. (Note that reviews have been edited for length and clarity.)
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