Casio WV300DA-7A Watch for Men

This rectangular face dress watch has atomic time keeping, so unless you are in a poor reception area, it will receive the up to the nano-second time updates every early morning starting around mid-night. In earlier models, this auto-receive function happens up to 4-6 times, which depending on your watch could deplete the battery over time. That is not a problem with this particular watch. It still will make the attempt up to 6 times. In prior models, the update would continue to be received numerous times whether or not it was really needed. Hey, if it gets it right the first time, why bother with all the rest of the attempts? With this model, once the watch receives a current update, it dispenses with the other attempts saving the battery for other functions. If you want, you can also do a manual receive of the time update. This can be a bit tricky since the signal is easily interfered with and could be inadvertently blocked by you, or other signals that may be around during the day or prior to midnight. I have noticed with mine that the signal is almost always received on the first try just after midnight, so a manual update should almost never be needed. You can also set it manually if you prefer, but you will probably never need to worry about that. It has other battery saving features too. There is no real reason to have the display remain functioning in low light, so this model has a power saver that allows the display to sleep at night. If you want the view the time at low light and the display is blank, simply press any button, and it will return. Or, you can always press the backlight with afterglow. One other note, while the display is inactive, the other functions of the watch continue as needed. The alarm will sound, the time receive will function. Any counters you have going will continue to count. One thing that is increasing important for me is the feature that allows watches and clocks to automatically update for daylight savings time changes. This one does that flawlessly. Aside from all of the other common digital watch functions like; World time - 29 time zones (48 cities), City code display, Daylight saving on/off, 4 daily alarms and 1 snooze alarm, Countdown timer, 1/100 second stopwatch, Hourly time signal, Auto calendar, 12/24 hour formats, and being Water resistant- I may not have mentioned a cool feature yet. This watch is among a growing line of Casio watches that is solar powered. Built into the face of the display, is a solar cell that receives energy from the sun or a really bright light and uses that to power the watch or charge the battery. On the face of the watch you also have a battery charge indicator, and because it is also an atomic watch, you have a display showing the signal strength of the last update session. As noted, this is a dress watch, so with that in mind, the display is much less intrusive than with other non-dress watches, particularly in Casio's watch line-up. The battery and reception indicators are very small and unobtrusive. The default time keeping display shows the date or day of week, the current time with seconds. The other display functions are similar to other digital watch displays. This model as reviewed comes with a standard light green background with black numbers. You do have an option of getting this with a reversed display (black background with lighter numbers). I looked at that one and frankly found the display hard to see in any reduced light conditions. (Since writing the original review, the dark display model of this watch has been discontinued) I have tried atomic watches from a few other manufacturers prior to Casio releasing their first model, and Casio has gotten it right. Of the atomic watches I have had from Casio, I have never had a watch failure in any mode of use. And this one is no exception to that statement.