Product that will seduce you barely unpacked: - Very discreet, it will ensure you do not break the ears at the end of the allotted time as its most common congeners (no ring) - No mechanism of noise either during use (so annoying) - The time from remains posted for the duration of use (so you do not forget it) ... 15 minutes in line at the Post for returning the same day it is received unfair ... So it was nevertheless a beautiful magnet for the fridge.