【5G Independent Calling】Built-in SIM card slot with 4G/5G network support enables independent calling and messaging without phone dependency. 【1.95 Inch AMOLED Display】Features a 1.95-inch AMOLED screen with 720×720 high-definition resolution for crystal-clear visuals and vibrant colors. 【Retractable Rotating Camera】Innovative 190-degree rotatable and retractable camera design allows flexible photography angles without occupying screen space. 【Android 8.1 Dual System】Runs on Android 8.1 with dual system mode switching, supporting independent app downloads and smooth operation. 【2100mAh Long Battery Life】Equipped with a powerful 2100mAh battery ensuring extended usage time for all-day performance. 【Comprehensive Health Monitoring】Advanced biometric sensors provide real-time heart rate, blood oxygen, and blood pressure monitoring for complete health tracking. 【3D Navigation & GPS】Built-in GPS with multi-satellite positioning system and 3D stereo navigation for accurate location tracking. 【NFC Smart Access】Integrated NFC functionality enables contactless payments and door access card simulation for convenient daily use. Specifications: Chip: SL8541E Memory: 3GB RAM + 32GB ROM Screen Size: 1.95 inch AMOLED Screen Resolution: 720×720 Operating System: Android 8.1 Battery Capacity: 2100mAh Network: 4G/5G Full Network Bluetooth-compatible Version: V4.2 Camera: 2MP Retractable Rotating Waterproof Level: IP67 Speaker: 1508 Wired Heart Rate Sensor: BD1820 G-Sensor: Supported Charging Method: Pogo Pin Watch Band Width: 24mm Case Diameter: 52mm NFC: Supported GPS: Multi-satellite Positioning WiFi: Single Band 2.4GHz Watch Support Languages: Chinese/English/Multi-language Package included 1 x Smart Watch 1 x English User Manual 1 x Charging Cable Specifications Brand N/A Color Black Packaging Type Colored Box Plug Type (For Supply) N/A User Manual (Language) English Gross Weight 0.269kg Volume Weight 0.217kg Package Length 11.000cm Package Width 11.000cm Package Height 8.000cm