Specs Name Mibro Watch Lite3 Dimension φ44.8mm, HR protrusion) Band Size Leather, Metal buckle,Width:22mm,Unfolded length 246mm Silicone, Plastic buckle,Width:22mm,Unfolded length 246mm Weight 53.2g(with leather strap), 56g(with rubber strap) Material Zinc alloy+ PC&20%GF Display 1.3"Amoled 360*360,AOD,PPI 277 Battery Life Standby Mode: 50 days Daily Mode: 12 days Music Mode: 5 hours BT-Calling Mode: 6 Hours Charging Port Magnetic charging port Bluetooth Bluetooth V5.3 Sensor PPG Heart Rate/Sp02 Sensor/ Accelerometer Waterproof 2ATM Operation Temperature 0°C~45℃