Sharp 12-Inch Atomic Wall Clock, Battery Operated, Glow in Dark

Update with video April 1, 2026: Video showing the second hand stopped. The background noise is not the clock but a pump 😅 Original: I have two of these Sharp Atomic clocks and honestly love them. I really hate resetting clocks for daylight savings (why is that even still a thing?) and these set themselves. I have two notes though. The first is that they tend to reset themselves in the middle of the night. I work nights, so looking up to find my clock spinning around like it's possessed is a little strange, even after several years. The other thing they both do is in the middle of the night, at the top of the hour like 1, 2, or 3 am, the second hand will stop at 12 for a few minutes. It still tracks minutes perfectly, but from :00 to :04 or so, the second hand is frozen at 12. I have no idea why they do this, couldn't find anything about it anywhere on Google. But, it resumes and keeps perfect time, so it's just an oddity. I'm pretty sensitive to ticking noises, and I cannot hear this clock tick unless my head is right next to it and the room is quiet. 15 feet away on the wall, I don't hear it at night at all, ever. It's a good size I can see across a fairly large room in my home (open floorplan), but isn't enormous or anything. Very simple, classic looking, easy to read clock face too. I'm poor and $40 is a lot for a wall clock. But I don't have to get out a ladder and reset the damn thing twice a year and I find that cost was absolutely worth it to me.

I really like this clock. Ease of use:When receiving it to say the least I was very impressed by not having to set it, we put the batteries in a short time later the clock had set it self. Then during daylight saving time happened again the clock set itself. Display: Easy to read at night it has it has a soft glow throughout the night bright enough to see but not a bright glaring neon. Quiet operation: No tick tick sound quiet I would recommend to buy this clock hands down. Haha! Hands down no pun was intended If you are wanting a smooth-operating clock buy this one!

Finally, a wall clock that looks professional and works reliably. Made in China, but with obvious quality controls--compared to the last dozen analog clocks we've tried. Detailed instructions are included; this clock by default will automatically set (and very accurately maintain) the time if in the continental USA. It also allows the time to be set manually.

... as I thought it might turn out to be for the first hour out of the box. It came with no instructions and since I don't live in North America, the automatic setting feature did not work. My bad for buying the clock without reading the product description carefully. I was also disappointed that the glass seems "smokey" and dimmed the clock face to light gray, not pure white as in the product photo. It is also not silent. I makes a faint ticking noise, which I decided wouldn't be unbearable. I wanted to like this clock, because it was easy to read from a distance and was well designed. It was only after searching online for instructions on how to set it manually that the fun began. Nothing I did seemed to work. But just when I thought the clock was a bomb, I put ChatGPT on the job and got it working. Perfectly. So for those of you who may have also bought the clock but don't live in North America, and who, like me, received no instructions for manual setting for the particular model I received from Amazon, here they are: Manual Setting Steps (SET / WAVE / RESET model) Start Fresh Remove the AA battery for at least 10 seconds. Have a reliable time source ready (phone clock, time.is, etc.). Insert Battery Insert one AA battery, matching the + and – markings. The hands will start moving. Enter Manual Time-Set Mode Press and hold the SET button. While holding, the minute hand will move rapidly; the hour hand will follow. Advance to Correct Time Keep holding until the hands reach your local time. Release the SET button when you’re close to the right time. Fine-Tune Seconds (Optional) To align precisely to the top of the minute (:00), release SET exactly when your reference time reaches :00. The second hand starts from zero at that moment. Ignore the WAVE Button if you don't live in North America WAVE = “force radio reception” (atomic sync) — works only in North America. Outside North America, pressing it will just make the clock search for a signal it can’t receive. RESET Button Resets the movement back to its starting point. Useful if the hands get misaligned or the clock behaves oddly. So the bottom line is, I'm glad I persisted in finding out how I could keep this handsome clock. It was worth the effort.

Clock arrived today and I immediately went to set it up in my garage. Flipped it over, set the time zone switch, set the DST switch, and put the battery in. As soon as the battery went in, the hands started spinning. It cycled through a whole 12 hour rotation and stopped at 12 o'clock and sat there. I hung it up on the wall and it started ticking the time (of course it was the wrong time, but it was working.) After about 30 minutes hanging on the wall, it received the time signal from Fort Collins, Colorado (I'm in Tennessee near Nashville) and it immediately set itself to the correct time. The glowing numbers look really good once they receive light for a few minutes to charge them. My kids think it's cool.

The clock's battery died on this clock. When we put a new battery back in, it did not reset properly. It reset 1 hour and 15 minutes ahead. I decided to wait 1 hour and 15 minutes to put the battery back in so it would be the correct time with my manipulation. It immediately went to 12:00, then the time started from there. So frustrated, I decided to take the battery out for a day, put it back in, and it reset almost 2 hours behind the correct time. I was happy with this clock until all of this happened 11 months after I purchased it. Unfortunately, it had only a 30-day warranty after purchase. Not a good value; paying $50 was too much for the quality and longevity of this clock. I do not recommend purchasing this clock!

The Sharp "Atomic" clock works as advertised. It receives a time signal via radio from station WWVB at the NIST lab near Fort Collins, CO. A small computer chip in the clock decodes the time signal and uses it to set the hands of the clock. The clock operates silently -- no ticking noise. NIST is the National Institute of Standards and Technology, part of the Commerce Department. The user guide for the clock says that I might need to try positioning the clock on different walls to properly receive the time signal. This was the case for me -- I had the clock on an east-west wall to begin with, and it did not "sync" that first night. I moved the clock to a north-south wall and the second night it synced successfully. When I looked at it the next morning it was displaying the correct time to the second. The user guide also says that signal reception is best at night and that it might not receive a signal during the day. I found this to be the case, too -- the clock did not sync during the daytime. Note that this clock model supports only the four main US time zones: Eastern, Central, Mountain, and Pacific. You set a selector switch in the clock to one of these zones. You also set a switch to tell it to adjust for US Daylight Saving Time or not, depending on your area. If you can't describe your location using these two switches, the clock won't display the correct time. It's really just for US locations in those four time zones and US Daylight Saving Time rules. I recommend the clock if you are located within the area for which it's designed. I particularly like the silent (non-ticking) feature. That works perfectly, and it's the reason I picked this model instead of one of the others. If a clock's description doesn't specifically say that it operates silently, then it probably isn't silent. There's nothing wrong with ticking, it's entirely a user preference, but I wanted silent operation.

Update: I liked the first one so much, I ordered another one with a gray face! If there's one thing I love, it's a functional item that makes my life easier. I hate going around the house twice a year at Daylight Savings time to adjust clocks. This eliminates that! This one is easier than other atomic clocks I've had as well. I just inserted a AA battery, and a few minutes later the clock was synced to the exact time down to the second! What could be easier? It is the perfect size for my kitchen, and is very light so mounting was easy. The large numbers and split hands are both stylish and easy to see. In all, a great value!

المنتج مكسور

Relogio muito bom e muito bonito. Tamanho perfeito. O único detalhe negativo é que não foi possível atualizar automaticamente as horas.

Pour l'instant cette montre murale fonctionne très bien. Suivi les instructions et il est vrai la nuit les aiguilles sont bien éclairé.

Muy bueno, pero no lo dejen en el sol para cargarlo, el vidrio funciona como un lente y quema el plástico donde vienen los números, ahora mi reloj está todo chueco. En ciudad de México se tardó como 2 días en sincronizarse.

It worked as advertised .Very happy .