I bought it for my wife, because when she is at home, the phone can be just anywhere, and, accordingly, a lot of missed calls, sms, whatsapp, etc. So I decided to try this bracelet, and it copes with everything with a bang. you can be at any end of the apartment, the bracelet does not lose connection up to 15 meters, when you call it vibrates and it’s good, so to say that I didn’t hear, now it doesn’t work)))) in general, as a reminder - great! The alarm clock is great too!See full review