【Comprehensive Health Monitoring】Equipped with ECG, SpO2, heart rate, and body temperature sensors for comprehensive health tracking 【Advanced Fitness Tracking】Features 20+ sport modes, automatic step counting, and detailed metrics including calories, distance, and pace 【Sleep Analysis】24/7 sleep tracking with detailed sleep stage analysis, including REM detection and sleep apnea monitoring 【Bluetooth Calling】Supports Bluetooth 5.3 for hands-free calling directly from your wrist 【Long Battery Life】250mAh battery provides 5-7 days of regular use and 20+ days on standby Specifications: Model GE50 Physical dimension 45*30*11mm APP H Band CPU JL7013A Blood oxygen chip VP556ER blood oxygen heart rate + analog front end ECG chip VP556ER Optoelectronic chip VP556ER Heart Rate (Dynamic accurate dual PD Heart rate Acquisition) Flash 128Mb Acceleration sensor HR|ECG|Spo2-VP556ER Gsencor sensor ROM KXTJ3-1057 (Acceleration + Gyroscope) BT Bluetooth LE 5.3 Charging mode Magnetic charging Water proof IP67 waterproof Battery capacity 3.8V 250mAh polymer battery Range: 5-7 days Standby time: 20-30 days Frame material Zinc alloy plating process Bottom shell material PC+ABS+ Medical 316 steel sheet Band material <td style="wid