The Xiaomi Watch S1 offers a variety of practical functions alongside exquisite design. The sapphire glass, 1.43" AMOLED HD display, stainless steel frame and leather strap ensure that functionality is not the only benefit of this watch. With over 117 fitness modes, 19 professional modes and over 100 extended workout modes and the wide variety of all-day health monitoring, the S1 will keep you fit and healthy. The dual-band positioning technology ensures faster and more accurate GPS positioning and routing. Under typical usage mode, the battery life of the S1 is 12 days. With NFC, Bluetooth calling and built-in Alexa, your S1 can be used for anything from contactless payments, phone calls and setting an alarm as with this, you can control your IOT devices and more.