I8 Bluetooth Smart Watch Altimeter/ Barometer/ Thermometer/ Pedometer/Recording/Anti-Lost Health Fitness Tracker Sleep Monitor Handfree Call For For IOS Iphone Android Smartphone Samsung Smartphone -Silver Music playback: Synchronizing with your mobile phone, you can listen the music in your phone via the watch and simply operate it (play / pause / last & next song) Dial function:Unique artistry ring tone alerts, you will no longer miss important calls even in noisy environment Pedometer: your health partner - pedometer, help you to take exercise and keep fit Sleep monitor: Recording and analyzing your sleep condition Altimeter barometer thermometer function