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1. SMART EXERCISE: Connect with the app to automatically your running routes and fitness data, allowing each workout to leave a footprint and help you improve your exercise effectiveness scientifically. 2. SLEEP MONITORING: Automatically tracks four sleep stages, measuring sleep duration, deep sleep ratio, and continuity of light sleep; the app also offers four theme styles for personalized aesthetics. 3. COMFORTABLE ALL DAY WEAR: Weighing only 22g, the seamless design fits snugly on your wrist, making it comfortable and enhancing the accuracy of your data monitoring. 4. LONG LASTING BATTERY: With an energy efficient low power design, this smart bracelet boasts a standby time of up to 40 days, minimizing the need for frequent charging for ongoing health management. 5. 10M WATER PROOF: Rated at 10M, The fitness bracelet can effortlessly handle swimming, diving, and surfing activities, withstanding everyday rain and showering without any issues. Spec: Item Type: Smart Bracelet Material: Silicone+Plastic Key: Single key Battery Capacity: 150mAh, lithium ion battery (shipped with built in battery) Water Proof Level: 10 M water proof Charging Duration: 2 hours Standby Time: 45-60 days General Usage Time: 20-30 days Charging Method: Magnetic absorption CPU Model: for Realtek 8762ESF ​ Version: BT5.0 How to Use: See user manual PackageList: 1 x Smart Bracelet 1 x Charging Cable 1 x Instruction Manual or1 x Main Unit 1 x Strap 1 x Charging Cable 1 x Instruction Manual Note: