Remax RB-T9 Bluetooth Sports In-ear Wireless Earphone Headset Compatible with all smart phones and tablet which have the Bluetooth function Phone call and music controlling in one button in the earphone,as convenient as possible Can remind the remainder electric quantity smartly Support multi languages Bluetooth Model RB-T9 Bluetooth wireless headset is perfect for those looking to exercise, listen to music, driving up the phone to connect to two devices simultaneously. Lightweight and durable to use. Excellent noise cancellation technology makes voice is much clearer.  With HD Voice technology provides excellent sound quality and crystal clear sound clarity