MARATHON Slim Jumbo Atomic Wall Clock, Walnut Finish - Large, 15-Inch Display - Alarm, AM/PM or 24-Hour Time, Eight Time Zones, Indoor Temperature & Humidity - Four AA Batteries Included

Don't panic if it doesn't pick up a signal right away! I read the fine print carefully, and it says to allow 24 hours for it to find a signal... So I left it over night, and by the morning it had picked up the signal! Mind you, one thing to note: - it automatically came on with "Daylight Savings Time" mode on, and was an hour ahead. So, I had to get my tech-savvy daughter to help me change this mode. The instructions for changing the MODE are not very clear. If yours comes on with "Daylight Savings Time", (and is an hour wrong), do not change the time - just change the MODE - i.e. toggle OFF the "Daylight Savings Time". As soon as you toggle it off, the time will correct itself! So, once you get over the initial hurdles of setting it up, it's a great clock! Looks very nice on the wall, nice walnut frame, super large numbers make it easy to read from a distance, and I love seeing the temp and humidity. One other thing to note - it doesn't light up at night, so unless you have a light on in the room, you won't see it in the dark. (One teeny disappointing thing, but it's not a big deal). Over all, very satisfied with this unique clock!

I was looking for a large LCD clock to replace a smaller one that was starting to fall apart. The numbers on this Marathon clock are huge, great for viewing from across the room. Three notches on the back for a variety of hanging options. Upon first taking it out of the box the display looked broken, but once batteries were inserted and the clock was put upright the liquid crystal settled out and the blotches disappeared. One drawback is the numbers fade and are a bit more difficult to read when you view them from an angle (see photo). I appreciate the faux wood sticker finish for the frame. It is much nicer and welcomed option. So far I am very happy with this clock. I've waited a long time to get something with LARGE numbers. I'll update this review if anything changes.

Received on 9/15/17 Had to test this clock for a while and sure enough set itself! But last night had a fan on all night, about 3ft. below clock! As I am quite familiar with reception issues with these Atomic clocks I new that it most likely would not set itself. Other clocks I have show the receive indicator for a few days before it turns off after no signal for that time period. As I had wanted, the signal indicator was off with DST and on when it received an update. That way you know that it was not updated! If I want to improve reception the fan will be off. I can not really see a need for any larger time digits than these...they are big! If you need a super large display you could use a computer with or tablet w/app and MHL/HDMI connected input. Do they make a 100 foot screen? All that sillyness, anyway, the humidity seems to show 3% high... or my other humidity gauges are 3% low! Not that I will need to use the alarm...it is loud! Can they not put a volume control in! I have modified many clocks to reduce the level! Some I never even use the alarm after but it is less noisy when setting up! Not a big issue w/this one! Temp reading is close to my other devices! Can't speak for battery life. I think MARATHON claims about 8 months. Oh! One last thing! This was used - very good condition item! Could not find anything wrong...it is indeed in very good condition! It was shipped in another box and packaged well! Would buy another for that price! Only $20.00 Now where is my 6 volt AC adapter...have to try a USB 5 volt...that might work too! GREAT CLOCK! THANKS MARATHON and AMAZON 6/24/18 just an update still working great...and it does update almost everyday even w/fan on. LOVE IT! 9/30/19 Update just checked and found that the the batteries were replace on 9/15/2018! Still do not use the alarm but looks like good battery life. If I modifiy and use an AC adapter I guess I would not have to replace batteries in maybe 5 or 10 years! That would be Super! LOVE THIS CLOCK MARATHON! Note: This review has been edit again to make more sense. Best of luck everyone!!! 3/06/2023 Happened to find this old review and had to add more. Good battery life so never DYI to AC power yet. The clock had been running a little fast if no update. So I modified and added a trimmer capacitor. Was able to get excellent accuracy over time and adjustment. Great because I moved and the location in the living room is terrible for receiving any updates on any device. DST this weekend so may have to set myself. Still working great!!! Just ordered a similar clock on Amazon but that has temp and humidity for both inside and outside. Hope that works just as good. Will review it soon!!! Thanks again AMAZON!

I found this clock to be quite a bit larger than I thought it would be. I could not get it to synchronize with the radio signal so I had to set it manually was a little challenging at first but then it was okay. Disappointed in the packaging as it was in its original box with no wrapping and the top was not even taped shut. The clock seems to work just fine with no damage.

First major problem: Contrary to the explicit statement in the item description, you CAN'T DISABLE DST. Other atomic clocks e.g. SkyScan can do this (I have one). So if you live where Daylight Savings Time is not observed, the clock will have to be manually reset twice a year. That's OK in a $25 desk clock but not in a $70 wall clock. How is it possible that the seller (Marathon, the manufacturer) would not know what features the clock has and get it right in the description? Now, the instruction book does talk about DST being activated (and presumably deactivated) but provides NO information on how to do that. All it says it that when DST is activated, the "DST" indicator will appear. But, of course, that's the one screen indicator that doesn't actually exist - not on the clock and not in the numbered picture next to that text! And obviously - but it needs to be said - I don't want to disable DST by disabling the atomic link! Still trying to get the thing to synch. The instructions for that are confusing too since the author apparently doesn't understand the difference between "receiving the signal" and "attempting to receive the signal". Sigh.

Honestly, this clock arrived as advertised. I only have one very minor complaint. During daylight savings clock change, this clock is not in an area where I can get a good signal to the atomic radio. It took me a while to figure out how to change the time. Marathon doesn't have a lot of documentation on their site, and it would be really nice if they would place something up there. With that said, I love how the numbers and info is very large and easy to see. Here's another suggestion that I think would make the clock even better. A basic sensor on the clock that illuminates at night. It would be very cool, if every time I get up or move, it illuminates for 10 seconds. Either way, it's a great product.

Needed a big wall clock for my gym/garage This one works really well - it is big, radio-synchronized and has features such as seconds, humidity and temperature. Setup was very easy. It looks very good on my garage wall. One small tip - when this clock synchronizes for the first time using radio signal, some CFL bulbs might cause interference (happened to me). Just leave this clock to synchronize overnight - it should do the trick.

It’s super easy to see everything. Easy to set up. The only cons I can see are that I can’t turn off the seconds (that I’ve found) and it’s not easy to hang. I prefer to hang things with command strips since I’m living in a rental, but there’s not much flat surface on the back to do that which means you need to use a nail.

Not for Australia Atom keeps appearing. Can’t turn it off Time lost

I've ordered the unit this morning. After the unit arrived, I've let it reach room temperature. Then I inserted the batteries - they are AA size, not AAA size like the description claims, and I was looking for instructions on how to adjust the time. While looking, the clock adjusted itself - it synced up with the satellite on my time zone. So I skipped reading the instructions and proceeded straight to hanging it on the wall in a conspicuous place. The whole process - ordering to wall - took 12 hours.

I bought this for a man with bad eye sight thinking it would help him see the time ect better. He can not really see the numbers as there is no lamination it is a solid grey with darker for the time ect... Also i see the pixels for the day of the week are weak. I am sad that this is not fitting our expectations

I love this so much i bought 2 more for my business. I have one in each room for my employees. Only issues i have is that they don't auto-update correctly in a steel building (messes up the signals) so i have to manually set them up for daylight savings. Other than that, awesome product, love it.

Useless feature called atomic time, and unless you're time is one of the preset time zones, this feature will reset the time you manually set up. Every morning at 2am it searches for some radio signal and then adjusts the time accordingly. Cancelling this feature based on their manual works till the next morning.... Been waiting for their technical support to call me back on this for more than 2 weeks... had to return send it back. Can't recommend obviously