Hi there,
Click on the picture with the Big White Clock and 12 Small Coloured Clocks in my Yahoo Photo album. That is as real life as it gets.
The dimensions are about 8cm by 8cm by 8cm.
The alarm when it goes off is tone-based, not ringing-based. All 12 colours will also start flashing non-stop. Deactivate alarm by tapping the clock once. No snooze function.
Regards
Jeremy