ACLUXS Fitness Tracker, Fitness Watch : Activity Tracker Smart Band with Sleep Monitor, Smart Bracelet Pedometer Wristband with Replacement Band for iOS & Android High-end Fitness Tracker: Track workout,running,riding,treadmill,hiking, fitness,basketball,badminton,tennis,football,climbing,spinning, yoga,dancing;8 default sport modes on the fitness tracker,additional 6 sport modes can be added in the APP Supports Bluetooth 4.0 with mobile app to connect with phone calls, messages and notifications. Automatic wrist-based heart rate tracking: Track heart rate continuously on your wrist.You can check your history heart rate data in the app once you have synced the data Supports IOS and Android in both Chinese and English Bayer medical rubber materials, feature good stability and elasticity, not easy to deform or break and feels comfortable next to your skin.30 days full refund, 2 year warranty