I own four of these clocks, three with the silver color frame, and one with the black color frame, and each of them works perfectly. Of course, since these are radio controlled clocks (aka RCC), which need to be able to reliably receive time signals each night from time signal station WWVB in Fort Collins, Colorado, they do need to be mounted with one of the broad sides (front or rear) facing roughly in the direction of Fort Collins, and they also need to be mounted at least 7 feet from any sources of radio-frequency interference, such as electrical or electronic devices, including fluorescent, CFL and LED bulbs/lamps. I find that AA alkaline batteries last well over one year in these clocks, and in some settings (i.e, that are not too warm), well over two years. I must confess that I have two of these clocks mounted in very unhospitable (if not downright hostile) locations, despite the manufacturer's recommendations against doing so: These two clocks are each mounted in usually-unheated outdoor buildings (one is a workshop, the other an outdoor office that is only heated for a few hours each day when in use), and these buildings each get very cold, and also very damp, at night, and despite these rather hostile conditions, both of the WT-8005 clocks work great! Of course, since the average yearly temperature in these two outdoor buildings is rather cold, it is true that the alkaline AA batteries in these two clocks do last considerably longer than do the batteries in the two indoor clocks (the two indoor clocks seem to average about 20 months of battery life, if not longer). By the way, I have noticed that several people have mentioned (at least one in the Q&A section) that they sometimes find the time on their clocks off by exactly one hour when they get up in the morning. There is a reason for this, and I have witnessed this problem here a few times myself, and I will explain more about what causes this very infrequent problem below: When you find the time on your radio-controlled clock off by exactly one hour in the morning (remember, the clock resets its time/date at 1:00 AM local time using the time signal from WWVB every night), this means that the WWVB radio signal was likaly a bit weak that night, and thus while the clock's WWVB radio receiver was able to read the time correctly (WWVB transmits the time in UTC, aka Coordinated Universal Time), it was not able to correctly receive the DST (Daylignt Savings Time in effect/not in effect) part of the signal, and thus, it may display the time as one hour earlier or later than it really is in your area. This problem will usually correct itself over the next one, two or three nights, whenever the WWVB signal strength improves sufficiently. Alternatively, to correct this problem sooner, you can take the clock outside, far from any sources of electrical interference (i.e., electrical and electronic equipment, including fluorescent and LED lamps), and lean its back against a tree or other wooden object, so that its broad side (front or back) is facing Fort Collins, Colorado (the location of the WWVB transmitter), and then press the WWVB Search button on the back of the clock and let it search for the WWVB signal for the next 7 minutes; it will hopefully correct the time setting during this period. When doing this, please remember that in most parts of North America, the WWVB signal is usually far stronger at night than it is during the daytime. And one more point, speaking/writing as an engineer and scientist: Many people tend to refer to such radio-controlled clocks (RCCs) as "atomic clocks". This is technically not true, as these clocks do not contain an atomic clock (i.e., an expensive rubidium or ceisum atomic oscillator and related atomic clock circuitry) inside them, and rather, these radio controlled clocks simply receive a time signal from NTIS's time signal radio station WWVB, which is controlled by an atomic clock. So, it is fine to call such clocks radio controlled clocks, and it is fine to say that they are "calibrated to an atomic clock source via the WWVB time signal" and it is even okay to say that they access atomic timekeeping, but they are not atomic clocks! Incidentally, I have always found the indoor digital thermometer on these clocks to be very accurate. BTW, I find that I can easily read the large digits on the LCD display that show the time from across the length of my kitchen or bedroom, each of which is a distance of 24 feet. Lastly, for those many persons who have asked on Amazon about where in the world the WWVB time signal radio receiver part of this radio controlled clock will work, here are some guidelines: The radio controlled features of this clock that access the NTIS time signal station WWVB in Fort Collins, Colorado can be used almost anywhere in North America, and, with a bit of luck, perhaps in Central America and perhaps even in parts of northern South America as well. To see the exact coverage area of the NTIS WWVB time signal radio station, visit the following page at NTIS's website: [...] Of course, you need to realize that the WWVB radio signal does not reach Hawaii, and even if it did, the clock, when operating in radio-controlled mode (versus in manual setting mode) can only be set to the four mainland North American time zones, and so even if, by some dint of magic, you could manage to get this clock to somehow receive the WWVB time signal in Hawaii, you would then face the problem that the clock has not been programmed to display the time in the Hawaiian time zone format. (Of course, the clock can still be used as a manaully-set clock in Hawaii, and also anywhere else in the world...!)
