ChiTronic&reg; 2016 Newest BX240 Bluetooth 4.1 In-Ear Earbuds Stereo Sports Headphones with Advanced Noise-isolating IPX5 Sweat-proof Hands-free, 6 Hours Playtime, Green Latest Bluetooth 4.1 technology with A2DP stereo music playing, easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices; Offer you impressive dynamic sound. Ultimate Comfort and Fit Memory Foam Ear Pads is designed to ensure a crystal clear sound while blocking ambient noise, You can get high quality, hands-free phone conversation even on the street or inside shopping mall. IPX5 Sweat-resistant, rain-proof, and light weight ergonomic design ideal for any workout, outdoor sports activities. Advanced bluetooth tech minimizes the power dissipation to 12mW, save 30% power than other headphones, it holds up to 6 hours of hight quality phone talk/music playing (with fast charging). Built-in microphone, supports hands-free, works seamlessly with iPhone, iPad, Macbook (supports battery capacity dispaly on iOS), Android Smartphones, Tablets, iPod touch, and other Bluetooth-enabled music players.