Feature: Bluetooth 4.2 + CSR - 4.2 Bluetooth + WT200 Stereo HD headphones to ensure super fast data transmission and stable performance COMFORTABLE FLEXIBLE DESIGN - Comfortable and flexible design with 3 EAR SETS, small, medium, large to ensure optimal comfort and hear performances. CVC 6.0 NOISE CANCELLING - Reduce surrounding noise and reduce background noise intelligently, enable much more clear music and mic sound, the integrated mic lets you chat without external noise or other interference, focus on hands free phone conversation and your favorite music no matter where you are. Large Battery - 65mAh X 2 Earbuds, 600mAh charging Case, 3 rounds for Earbuds charging. Charging was for Earbuds- Charge with dock, charge seperately with USB 6 HOUR LONG LIFE TIME - Up to 6 hours of music time and 360 hours stand-by with a quick charge of only 1 hour. The earbuds battery status will be automatically displayed for IOS and some for Android Phone screen. Remote Control near your right ear. Support to connect two Bluetooth devices simultaneously and transfer calls between two mobile phones. IPX6 WATERPROOF SWEATPROOF - Workout sweatproof Bluetooth earbuds. Great for Running, Jogging, Hiking, Biking, Gym etc"