Watch Band- Yarrashop Watch Strap for Smartwatch Quick Release Silicone Replacement Accessories with Metal Clasps Watch Strap/Wristband Silicone 22mm [HEART RATE MONITOR]- The fitness tracker can be used alone to track your daily heart rate, helping to better adjust physical state while exercising. Green light will scan your pulse to get a real time data. The highest and lowest heart rate can be setup in APP and it will alert you if you get the warning line. Raise your hand and the screen lights up. Convenient and practical! [WATERPROOOF & SPORT TRACKER ]- The fitness watch is IP68 waterproof to support actions like swimming, hand-washing and taking a cold shower. Hot water will crash the watch. The GPS sport tracker records your movement of walking, running and riding, show the time and steps you take and the calorie burned. Allows the range of 10m to induct. You will know yourself very well and keep moving! [MULTI-FUNCTIONAL WATCH] - Surprising functions of the tracker are waiting for being exploring! It can monitor and analyze your sleep quality from the data of sleep time and deep sleep time. The alarm clock will vibrate instead of waking up your partner. Also it can remind you of stretching yourself after a long time working, warn you to answer a phone or message. A remote to shoot pictures & videos, play music and find your phone are all available. [HIGH PRECISION QUALITY ]- Fashion design of the tracker brings good mood to start a new day! A functional key to control all the functions. Soft strap with buckles is non slip and comfortable. Large OLED screen (0.87*1.57in) shows clear icons and feels great. USB charging port hiding in the strap is convenient to charge. 9-day long standby time and 1-4 days using time makes the tracker more durable. Light enough to be with you all the time! [WIDELY COMPATIBILY] - The fitness tracker works for the smartphones which is Android 4.3 and above, IOS 8.0 and above, with BT 4.0. Download the App by scanning the QR code on the manual or search the app "smart wristband 2" from Google play store or App store. You can even see the calorie burned of indoor sports like sit-ups and rope skipping. Package includes 1 x Fitness Tracker and 1 x User Manual. 24-Month Warranty and lifetime customer service.