Features: Advanced Fitness monitor with Heart Rate Monitoring and Smart Sleep Analysis This upgraded sports band delivers precise health data day and night using cutting edges sensors, solving inaccurate nighttime tracking issues for health awake users. Engineered with medical grade silicone straps and multiple sport modes (running/cycling/swimming), this waterproof activity monitor features a 7 day battery life through optimized low power . Ideal for fitness enthusiasts, frequent travelers, and busy professional seeking comprehensive health insight, it serves athletes tracking workout and office workers monitoring stress induced heart patterns. Wear it confidently during gym event , overnight sleep analysis, or business trips – its lightweight design (under 25g) and IP68 rating secure seamless change between workouts, showers, and daily commutes. The silicone band with adjustable closure provides all day comfort, while the sunlight readable 1.1" AMOLED display delivers fast access to real time health and workout progress tracking. Specifications: Component : silicone Battery: included Size: about 5x30cm/2x12inch Package Includes: 1 set Fitness monitor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.