- Solar: So no HikHak with batteries more, the clock is ticking and invites himself in bad weather enough to so that you do not need to refuel under a lamp
- Radio: Nightly synchronizes the clock itself what adjustment, makes winter / summer time and calendar setting unnecessary
- Very sturdy glass, as I have tested several times unintentionally
What could possibly be bothersome is the relatively thick seal that would be yes, but if need be exchanged.