MCigmee (TM) Wireless Sport Stereo Bluetooth Headphones Sweatproof Headset for iPhone Samsung iPad LG Laptop and More (Black) Bluetooth version 4.0.Let you get high quality music, hands-free phone conversation with clear voice even in noisy environment like inside a gym and running/cycling on the road Built-in high quality li-ploymer battery provides 500hrs standby time,15hrs talk time, 10hrs music play time.The Charging time is less than 2.0hr Comfortable earbuds stay in ears - great for gym, running, walking, biking, gardening, working out, TV listening, driving, airplane travel Capable of having two devices connected to the headset at the same time, a freedom convert phones between two connected phones Light neckband made of ultra-light shape memory alloy. Easy to handle ear set with magnetic properties