Bengoo QY8 V4.1 Wireless Bluetooth Headphones Noise Cancelling Headphones with Microphone WATERPROOF&SWEATPROOFUnique structure makes them suitable when breaking a sweat or under light rain. The functional user interface, in-ear headphones design and a-10-meter working distance features make you enjoy music through a variety of activities. 7 HOURS PLAYING TIMEWith the built-in high performance polymer 80mAh battery, this earphone can last 7 hours talking/playing time and about 175 hours standby time. Our earphone will save you the trouble of having to charge them constantly, let music stays with you whenever. COMFORTABLE FIT Flexible and comfortably fitting earhooks that cling steadfastly to your ears. The BENGOO QY8 Headphones are also compatible with most Bluetooth-enabled phones, and reduce external sound. PREMIUM SOUNDBENGOO QY8 is equipped with Bluetooth 4.1 technology, offering you perfect stereo sound. And it can connect with 2 cell phones or tablets at the same time. The Bluetooth 4.1 delivers loud clear sound and powerful bass and maintains a stable and reliable connection ERGONOMICALLY DESIGNControl all functions of your music (volume, sound, song selection) and calls from your phone via our simple-to-use user interface on the headphones themselves. Built with craftsmanship to guarantee a comfortable and secure fit even during work-outs.