Marathon Slim Jumbo Atomic Wall Clock, Black - Large 15-Inch Display, AM/PM or 24-Hour Time Format, 4 Time Zones, Indoor Temperature & Humidity - Four AA Batteries Included

Great clock. Works very well. I rely on this clock all the time for day,date,time etc.

UPDATE:After 48 hours, the time has finally adjusted properly. All is great!Pic 1: After 24 hours, the time had not set properly--the time zone was not correct (it says "E" instead of "P"). In this pic you can see the dimension (clock is 9 inches high, and the time letters take up 4.5 inches of that)Pic 2: After 48 hours, with some nice hand holding from support at Marathon, the clock did set itself properly. I've taken a pic with one of the jumbo clocks we own.Pic 3: It FEELS slimmer, but is it? Here is a pic of the slim and the jumbo from the edge angle. (It's only slightly slimmer, but somehow it feels a lot slimmer than it really is)***I own five Marathon clocks. Most of them Jumbo sized. My favorite configuration is just like this slim one: time in huge letters (with seconds), temperature, date, AND humidity. it can get very dry in higher altitude, and it's nice to have a reminder to turn on the humidifier in my bedroom.overall, the best thing is marathon is a good company. they've been making nice, atomic clocks for awhile. after purchasing from amazon, they send a follow up email--and this time, i actually wrote back to let them know the atomic signal has not set the clock after 24 hours. they referred me to an actual person with a phone number--and he and i were chatting in a few minutes. he was very reassuring, and sure enough--after another day with the clock near a window, everything set properly. the ONLY time i had to return a clock was when I bought a jumbo marathon for hawaii. let it be known, that clock signals from colorado do not reach hawaii. :)as for the product, i love marathon's large number, atomic clocks. mainly, i used to hate dismounting every clock in the house twice a year when the time changes happened. so this solved that issue. the only thing that had been holding me back from buying more is the high price point of the jumbo (~$80). so when i saw the slim-jumbo at $49.95, i dove in.some nice touches are the temperatures can be toggled F or C. and the dates come in two formats ("european" where the day comes first, or "american" where the month comes first). if you for some reason want to set the clock manually--just hold down the mode button in front, and use the snooze/alarm to increase or decrease things. i think you have to also use one of the button on the back (12/24) to change the East, Mountain, Pacific designations when that is blinking.i had hopes that the very light background would make this easier to see in my dark bedroom. this still has not improved--it's the same as the old jumbo. but the tech support guy did mention they're working on a backlit one...overall, this is a minimalist/functional looking clock and at a much more reasonable price compared to the jumbo.PS, i did not receive this product free, discounted, or as part of vine. i paid full price, i needed a clock like this, and i chose independently amongst many competitor options.

This is a very nice, slim clock with very large digits. I have an older version of this clock and am I little disappointed that this version so prominently features the humidity at the expense of shrinking the date and day. I need to know what day it is, well, daily. The humidity? Eh, it's an interesting data for curiosity, but not something I really want to know all the time.This clock is out in Boston, and while I realize that puts it rather far from the atomic signal, it means it really doesn't sync on my wall where it is without removing it and putting it in the window overnight."Oh, well, Chuck, what does it matter that it's not synced to the absolute exact millionth of a second every day?" A decent bit. The clock, while it might sync to the atomic signal, is not all that accurate at keeping time by itself. In under a month of not syncing it's now running about 16 seconds slow. The whole point of a big digital atomic clock showing seconds is that it's supposed to tell you the right time at a glance. If it's going to be drifting so much I can't even be sure of the minute without taking the clock off the wall every few weeks...well, that sort of defeats the purpose.If you live closer to the signal or with less interference it might not be an issue for you.

Very sleek contemporary styling, the LCD display is sharp and clear, and the clock synchronized with its time source within 20 minutes after I hung it on my wall! Also, the clock has a fold-out stand for mounting on a desk or dresser, and has the ability to be used as an alarm clock. The downside is that the alarm clock control buttons are very small, and the clock isn't backlit to read in a dark room - so, this might be an unnecessary feature. But, since I bought this for use as a wall clock (it is quite large - 14.5"W x 9"H x 1"D), I'm really not worried about the alarm function. All in all, I am very pleased with this item and expect it to last for quite some time. It isn't the least expensive choice, but Marathon is a well-known maker of quality products, and I have confidence they'll be around if I have any problems with my purchase.

Even from 7 feet away the time, calendar, temperature and humidity readings are easy to read. Syncing with the atomic clock works most of the time. However, I think the clock would sync all the time if it were closer to a window (currently, 6 feet from window). There's only one slight drawback. The clock does not have any backlight when the light in the room is low like when I'm watching TV. However, I can still tell what time it is, just can't read the calendar, temperature and humidity. Overall, the clock is very accurate and easy to read in the daytime. It also seems to be solidly built.

Works as advertised, what I wish was different, the size it could be a little bigger both width and height, I wish it would backlight when there is no ambient light present, it's a little pricey for the size.I am using this in a home gym (room) and it really works very well for this with the ability to quickly glance at it in order to check the time, temp, humidity etc. I love it and do not regret my purchase even though it would have been a better value at a slightly lower price point.

Needed an atomic clock I could read from 14 feet away! This clock is very easy to read from 14 feet away (pictured on right). Picture is not from 14 feet away. Including the seconds, temperature, date and humidity! This is my 5th Marathon atomic clock. I’ve bought. All still work! Even my CL030033WD bought in November 2015(see left picture). Only trouble I have is with Marathon CL030052BK I bought in April 2017. It no longer automatically adjusts for Daylight Saving Time. Highly recommend Marathon for all your Atomic clock needs!