Link Dream Fashionable Removable Earphone Style Smart Watch Vibration Calls Reminder Sync Calls Music Voice Calling For IOS, Adroid Nokia Lg Htc Smartphone Etc (Black) Hands-free calls : When you are driving or doing business, you can call with this portable bluetooth earphone. Call Reminder; When you have calls, it will vibrate to remind you. So you will never miss them! Bluetooth; With bluetooth V3.0, this bluetooth earphone is available for many cell phones with bluetooth function, such as Android Phone, IOS devices, Nokia, Blackberry. Battery; This bluetooth earphone can charge anytime by watch. With 25mAh Li-Battery, this bluetooth earphone can talk about 1.5 hours. In fact, it can work about 7 hours because of the watch. The watch can charge it about 5 times with 200mAh Li-Battery. Voice Call; You can use voice to dial as long as your smartphone has this voice dialer funciton.(only English) and -Enjoy Music You can enjoy music everytime,such as doing exercise, touristing