Upgrade Version Bluetooth Headset, Prosensor&reg; Invisible in Ear Mini Wireless Sports Earphone Headphones with Mic Using NEW Design Silicon Earbud More Comfortable & Not Easy to Fall The Newest S550 Bluetooth headset is the updated version of S530 earphone with lightweight and compact portable design, especially using the new silicon cap that makes comfortable to wear and not easy to fall out, very suitable for running or any sports exercise. We are committed to creating the most mini Bluetooth headsets. Built-in HD and sensitivity microphone. Ideal for in-car calling or working use. Support A2DP , makes you can enjoy clear and natural sound when calling. Multi-point pairing which allows you to connect 2 mobile phones simultaneously. Battery status can be displayed on iPhone. Universal Compatibility: headphones can work iPhone 6s 6 plus 5s 5 4s 4 and Samsung galaxy s6 s5 s4 4 and seamlessly with your iPad, iPhone, iPod Touch, Android Smartphones, tablets, Bluetooth-enabled music players and any device with Bluetooth connection. Built-in 50 mAh battery. Up to 4 hours of continuous talk time, 3.5 hours of music time