Xiaomi Redmi Watch 4 Smart Watch BHR7848GL - Gray

Features: 1.97" HD AMOLED Display (390×450px) 60Hz High Screen to Body ratio AOD (Always On Display), up to 600 nit brightness Almunium ally frame and stainless steel crown SpO2 (Blood Oxygen Level) Measurement and 24-Hours Built-in Precise 4-Channel PPG Sensor for 24-Hour Heart Rate Measurement 150+ Sport Modes Bluetooth Phone Calls - Paird with your phone. You can receive call and talk from the watch within a range of about 10 meters. Multi-System Stand-Alone GPS 5ATM Water Resistance - Can be used white swimming Battery Life of up to 20 Days,  470mAh Magnetic Charging