Willful Wireless Bluetooth 4.0 Sport Earbuds Noise Cancelling Stereo Earphones In-Ear with Mic Earhook Volume Control for iPhone 6 6s Plus IOS and Android Cell Phones for Running Gym Sports P530 Bluetooth 4.0 technology,the signal strength is nearly twice times than the general bluetooth headset in the market Awesome portable and lightweight wireless headset can be stay in your ears comfortably and safely. Compatible with most Android Smart Phones, iPhone, Tablets and other Bluetooth-enabled device with clear sound. Only need to pair once and easy to pair, beeps when it is running low Simple-to-use: control all functions of your music (volume, sound, song selection) and calls from your phone via our sim ple-to-use user interface on the headphones themselves.