Bluetooth Headphones, AngLink V4.1 Wireless Sport Headphones Sweatproof In-Ear Running Workout Headset with Fitness Pedometer Tracker Built-in Mic for iPhone6 6s Plus Android Phones STEREO SOUND: Latest Wireless Bluetooth 4.1 Technology with A2DP stereo sound, provide Bluetooth headphones crystal clear audio stereo music sound and built-in Mic ensure clear speech for your hands free calling. FITNESS TRACKER: can be used as pedometer to record the steps taken, the distance covered, and the calories burned. No need to download any APP, statistics are shown directly on the headphone displayingscreen. Easy and convenient. AROUND-THE-EAR-DESIGN: the ergonomic behind-the-head and around-the-ear design ensure its always stable and comfortable, three interchangeable different sizes extra ear caps to fit your ear shape. The ideal companion for running, jogging, Gym, exercise and other workout. UNIVERSAL DEVICE COMPATIBILITY: Universally compatible with most Bluetooth-enabled phones and tables. An innovative one-to-two technology allowing the headphones to connect two devices at the same time. PROMOTE SERVICE: We are always ready to provide prompt and friendly customer service. We provide 45 days money back and 180 days replacement warranty for this Bluetooth headphone. If anything goes wrong, simply drop us an email and we will help to make it right for you.