Xiaomi Watch S1 - premium smart watch. 1.43 '' AMOLED HD display with a resolution of 466 x 466 px. Support for 117 sports modes, integrated dual-band GPS, SpO2 blood oxygenation, heart rate and sleep monitoring. Integrated microphone - the ability to make phone calls through the watch and use Amazon voice assistant Alex. Notification of calls, sms and applications from the smartphone. NFC support for wireless MasterCard payments. Water resistance up to 5ATM - with a watch it is possible to swim. Battery life up to 12 days.