BENGOO V4.1 Bluetooth Wireless AD2P Stereo Music Sweat-proof Wet-proof Handsfree Sport Gym Headset Headphone Earphone for iPhone X 10-Black COMFORT FIT FOR WORKOUTSoft and Removable design, strap is adjustable. Your ultimate comfortable choice for wireless music and call when training. Item is very compact(20g),you will not feel uncomfortable to wear it up. ULTRA HD VOICESample rate of N2 has dramatically expanded from 8kHz to 16kHz, speech frequencies expanded from 280Hz-4kHz to 50Hz-6.1kHz, far beyond band limits caused by mobile network and Bluetooth link, it means that narrow band era has come to an end, ultra HD wideband speech has come to your world. (telecommunication network support is needed) HANDS-FREEEquip built-in microphone for hands-free phone call and it supports say "yes" to answer a income call, Or say "No" to reject it. Good for driving or sporting: Dual, high-performance mics deliver superb noise cancellation, so calls come in crystal clear. You just need to press on button. SIMPLE-TO-USEControl 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. DURABLE DESIGHSweat-proof, durable design, Onscreen Battery Meter, Up to 4-6 hours of Talk/Playing Time and 150 hours Standby Time. High-fidelity stereo music and clear speech, you can begin enjoying CD quality stereo sound instantly.