Pros: small, lightweight, good snooze alarm
Cons: absolutely weak alarm sound, not enough to wake me up
This clock looked promising when I received it. It is very small, lightweight, and has a pleasing form-factor. But I should have known when I saw the battery (a coin-shaped watch battery) that it wouldn't have the power to make a loud alarm sound. Sure enough, I have tested it 3 nights in a row, and it has never actually been loud enough to wake me up.
This alarm might be OK for very light sleepers. But if you are a normal- to sound-sleeper, get a clock that takes AA or AAA batteries (plural), and thus has a reasonable chance of being loud.