Novpeak Wireless Bluetooh Earbuds Sweat-proof Noise Cancellation Microphone and Hands-free Stereo Headphones 10-15 Day Delivey! On Sale! 3800+ Sold! Effective standby time: a built-in high performance polymer, 7 hours talk time, 7 hours playing music time, and over 175 hours of long standby time Perfect anti sweat: the user's functional interface, 10 meters of effective operating distance, so that you can enjoy the perfect music in all kinds of situations Device compatibility: compatible with most Bluetooth headset, reduce the external noise to bring you the trouble Simple-to-use: control 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.