A downright better than with a conventional alarm clock awakening; I'm in better shape. The big worry is that the product is unreliable and I found myself with big clock failure (cata: children very late to school, me at work ...) especially when updates iPhone update. It's still very annoying to wake on who you are supposed to rest, this is the case to say ... If we have to double it with another I do not see much use !! ! Not thrilled either Customer service: it feels like an administration, it lasts 4 hours with "type 1 2 3 4 blah blah blah - drunk and in the end it is absolutely appalling: either I turn to Amazon (them s' wash by hand) or I buy another with a coupon of 30%, but not too kind, really !!!! My alarm 18 months !!!