Synchronous electric clocks do not have an internal oscillator, but count cycles of the 50 or 60 Hz oscillation of the AC power line, which is synchronized by the utility to a precision oscillator. The counting may be done electronically, usually in clocks with digital displays, or, in analog clocks, the AC may drive a synchronous motor which rotates an exact fraction of a revolution for every cycle of the line voltage, and drives the gear train. Although changes in the grid line frequency due to load variations may cause the clock to temporarily gain or lose several seconds during the course of a day, the total number of cycles per 24 hours is maintained extremely accurately by the utility company, so that the clock keeps time accurately over long periods.
Brimming with an antiqued appeal, this clean-lined wood and glass wall clock brings function and flair to your home. Its distressed details pair perfectly with reclaimed teak wood accents while its neutral color palettes blend effortlessly into any monochromatic look. Add this piece to the den to bring the traditional flair to a cozy coastal arrangement, then pair it with woven rattan furniture and driftwood decor for a complementing look. Round out the room with a hand-woven jute rug to define...
Traditional led alarm clock models just don’t work for you? No problem. Blast your favorite mp3s or just have a crazy loud sound go off. You have to get up and actually step on this Instecho Carpet Alarm Clock to get it to stop, which is no problem.You’ll jump up, stomp on the mat, and be done with it—set it to play tunes for you afterwards (at a decent audio level) as a mini reward system. This mat gets up to 120 decibels (think as loud as two window unit air conditioners).
Defined by its vintage silhouette, this round tabletop clock features two bells up above connected by a slender bridge. Its bold black numbers and classic pierced hands help you keep track of your day, while its alarm ensures you'll wake up on time to start your morning right. This metal design is offered in several bright shades with chipped accents that enhance its antique look. It requires one AA battery (not included).
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.
Stay punctual with an alarm clock! They are great for waking you up in the morning or simply reminding you of special events. These items are a household must-have! Perfect for bedside nightstands, most alarm clocks feature a built-in FM radio to enjoy your favorite radio station, as well as a snooze button for when you need 5 to 10 minutes more sleep. iHome? clock radios have dock for MP3 players to listen to music through the speakers. Choose from a variety of unique, creative designs that are great for virtually any d‚cor.
This Alarm Clock has many features that make it an excellent addition to your nightstand, work station, kitchen counter or end table. The first thing that separates this Alarm Clock from the rest are the two, easily accessible USB ports located directly on the front of the clock. These ports are fast charging and are perfect for your phone or tablet. Second, the illuminated digits are bright and easy to read in the dark. If you find them too bright when you are trying to fall asleep there is a...
Go to bed with positive thoughts. Tell yourself, “I want to get up early because…” and then, actually do it. Sleep studies happen all the time, and they tell us what exterior activities are affecting our dreams, our nightmares, etc., and talking to yourself as you drift off to bed has been proven to work. If you’re looking forward to something in the morning, tell yourself about it, and your body will hold onto that through the night.
Greek astronomer Andronicus of Cyrrhus supervised the construction of the Tower of the Winds in Athens in the 1st century B.C. The Greek and Roman civilizations are credited for initially advancing water clock design to include complex gearing, which was connected to fanciful automata and also resulted in improved accuracy. These advances were passed on through Byzantium and Islamic times, eventually making their way back to Europe. Independently, the Chinese developed their own advanced water clocks（水鐘）in 725 A.D., passing their ideas on to Korea and Japan.
Bring an earthy touch to your walls with this understated clock, a rustic accent for your space. Featuring a paneled distressed wood design with metal Roman numerals in a distressed gray finish, this clock brings a neutral touch to your look. Measuring at 27.5" x 27.5, this clock fits over any console or mantel space. Upkeep is easy—just wipe clean with a damp cloth—and install a AA battery (not included) to operate.
This massive iron wall clock is 49" in diameter and is finished in off-white with an antique nickel outer ring that is moderately distressed and dented for an aged appearance. Black Roman numerals are centered on individual antique off-white panels. Quartz, battery-operated movement requires one AA sized battery. Some assembly is required. One year warranty and Free Shipping.
This item is a new-Never removed from box-SEIKO brand musical and movement wall clock. Clock and packaging in mint condition. Plays 24 different melodies and the 6-piece dial opens and turns during hourly melodies. Rotating pendulum and dial has Swarovski crystal components. This is the now retired “Special Collector’s Edition” considered one of the finer of the melodies clocks! Batteries are included. Comes from pet and smoke free home. As always Thank you for your interest!
Instead of sleepily fumbling with the alarm in the mornings trying to find the “off” switch, simply flip this alarm over to the other side. That’s it. Amazon reviewers rave about how minimalist and lightweight it is, perfect for throwing in your carry-on for vacations or business trips. Bonus: It comes in a variety of bright poppy hues, as well as more subdued colors like this modern dark wood.
“I have searched for a well-designed clock for kids and was so pleased I finally made this purchase. It was definitely pricier than other options, but this one is actually well-designed, usable, and does all the functions well. My daughter loves how cute it is, and the yellow light and green light has allowed us to get more sleep in the mornings, which is priceless. … We don’t use the nap feature or white noise machine all that much, but we like the night-light and wake-up training features. The size is perfect, and it’s not too bright. Plus it has the time on it, which is perfect for my preschooler who is learning about time.”