Have bought another copy for the second home. The Erstexemplar done for ten years precisely and silently his service, one AA battery charge is sufficient for more than one year maturity. The snooze button 5 Minutes "closed season" I do not want to miss, the increasing alarm sound is pleasant, as useful the senior-friendly large digits. A small Macke has the good piece: was previously set another alarm, then crack the alarm at this time very softly. I can live with that. Conclusion: Perhaps not a designer piece, but reliable and convenient to use.