Bluetooth Headphones, Bluetooth Earbuds V4.1 Wireless Sports Headphones Sweatproof Running Stereo Headsets (Black) Latest Bluetooth 4.1and, easy and fast pairing with phones, ipad.Powerful audio driver offers balanced audio and crystal clear sounds Comfortable stable Earbuds: Portable and Lightweight Bluetooth Headphones,unique flexible and comfortable design avoid any pains ,ensure you get it perfect fit and remain stable in your ear Hi-Fi Stereo Sound: Hi-Fi Stereo Music Sound and Strong Signal. Let you get high quality and clear voice even in noisy environment like inside a gym and running/cycling on the road Powerful Rechargeable Battery:Built-in polymer lithium battery(75mAh), up to 150 hours of stand-by,up to 8 hours of talk time, up to 5 hours of calculating conversation time and 1.5 hours charging time Support Devices: iPhone 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