Comments about National Geographic Mini Global Atomic Clock:

I planned to use this clock for travel, but had to abandon this idea and got a different travel clock. This one is cute, but too complicated to set up. So I used it in my office just as a plain clock. It worked fine, until the battery went dead. When I replaced the battery, the clock set itself to the Mountain time. By then I lost the manual, and cannot figure out how to set the clock to Eastern time. So the clock is useless now, unless I'll find those instructions.

Comments about National Geographic Mini Global Atomic Clock:

The advertising copy made it sound much better than it was. Am back to using my old clock which cost less. See complaints above. There are no pros. Only bought because if was from National Geo. Will know better next time.

Comments about National Geographic Mini Global Atomic Clock:

I'm a frequent traveler, domestic and international. An alarm clock should wake you, and do so at the proper time. This one didn't always wake me, because it's volume is too low. And I found it not easy to program it for a specific time, when your travels take you across time zones.

Comments about National Geographic Mini Global Atomic Clock:

There is only one atomic clock signal in the U.S. which is Mountain time. After you receive the exact correct time you have to manually reset the clock to your time zone (for example, Central). The clock resets itself automatically, back to Mountain Time, every few days so you have to reset it to your time zone again. Not very useful if you plan to use as an alarm clock.