Bluetooth Headphones, Wireless Bluetooth 4.1 Stereo In-Ear Noise Cancelling Sweat-proof, Sport/Running Earbuds/ Headset with Built-in Mic for iPhone, Android and Other Smartphones(Black) Newest Technology: With Latest Wireless Bluetooth 4.1 Technology with A2DP stereo music provides unparalleled stereo sound quality. High-quality noise cancellation technology reduces outside noises which provide clearer sound Powerful Rechargeable Battery: Built-in polymer lithium battery(120mAh), Charging for 2 hours can be used for 5.5 house(talking time/ listening music) in Max volume Easy to Use: Our wireless headphones pair with devices up to 10 meters away, and you can use the function key on the headset to realize any function according to your requirement The special Behind-The-Head wearing style holds your Buds in place during rigorous workouts. The flexible Memory-Wire adapts to the size of your head and helps provide a perfect seal for a better listening experience Widely Compatible with iPhone 7/7Plus 6/6S, 6S Plus, 5 5c 5s 4s,iPad Air, Samsung Galaxy S6,S5,S4,S3 Note 4 3, HTC M9 M8 M7,LG Flex 2 G3 G2, Apple watch and Other Bluetooth Android IOS Smart Cell phones/Devices