【1.39 Inch HD Circular Display】Features a classic round dial design with 1.39-inch TFT high-definition touchscreen (360×360 resolution) and On-cell full-lamination technology for smooth operation and clear visual experience. 【24/7 Health Monitoring】Equipped with C30F-S high-precision biosensor for continuous heart rate and blood oxygen monitoring, plus advanced sleep tracking to comprehensively monitor your health status around the clock. 【100+ Sports Modes & IP68 Waterproof】Supports over 100 exercise modes covering running, cycling, fitness, ball sports, and outdoor activities with precise data recording, while IP68 rating ensures worry-free use during workouts and daily activities. 【Bluetooth-compatible HD Calling】Built-in 0815 speaker and anti-interference 4015 microphone with Bluetooth-compatible 5.3 dual-mode connection for hands-free calling and smart message notifications, keeping you connected on the go. 【Long-Lasting Battery & Wide Compatibility】300mAh large-capacity battery provides multi-day usage with 2-3 hours fast charging, compatible with iOS 9.0+ and Android 4.4+ systems for broad device support. Specifications: Model: SW05 Screen Size: 1.39 inch TFT Screen Resolution: 360×360 Memory: RAM 640+32KB+2MB PSRAM, ROM FLASH 128M Heart Rate Sensor: C30F-S Bluetooth-compatible Version: 5.3 Dual-Mode Material: Zinc Alloy + PC Case, Silicone Strap (22mm) Product Size: Ø46 × 12.2mm Battery Capacity: 300mAh Charging Method: Magnetic Charging Charging time: 2-3 hours Vibration: Flat 0827 Motor Speaker: 08×15 Mic: Strong Anti-interference 4015 Waterproof level: IP68 Sport modes: 100+ Compatible system: iOS 9.0+, Android 4.4+ Input Current: DC5V ≥500mA Package included 1 x Smart Watch 1 x English User Manual Specifications Brand Ldnio Certificate CE-EMC,CE-RED ColorStyle A Packaging Type Paper Box Plug Type (For Supply) N/A User Manual (Language) English Gross Weight 0.306kg Volume Weight 0.260kg Package Length 13.200cm Package Width 13.100cm Package Height 6.700cm