Crystal Clear Stereo Sound: CSR Bluetooth 4.1 chipset + CVC noise reduction technology allow pure high fidelity stereo sound enjoyment; can connect with 2 devices simultaneously</br>Ergonomic Design: Closely fits your auricles this portable and lightweight headset stays comfortably and stably in ears for hands-free music playback and conversation</br>Sweat-resistant and Fashionable: Special electroplate processing enhances sweat-resistant performance building for Active Lifestyle like running jogging cycling and other outdoor sports</br>Long Battery Life: Built-in durable battery lasts up to 4.5h conversation 150h standby time per full charge</br>User-friendly: Optional 3 pairs soft earbud tips in different sizes prompt voice and battery power display on IOS devices allow more ease and pleasant experience</br></br>Product Description</br></br><strong>iClever BoostRun Sports Headphones</strong><br> - Hands-free Working Style: Equipped with HD Microphone and CVC noise reduction technology it allows pleasant hands-free music and conversation experience<br> - Lightweight: Feather-light 14g with behind-the-neck design?? extremely snug and tangle free for workouts<br> - Caller ID Readout: When there is an incoming call?? the headset will report the incoming phone number(if you phone supports this function)<br> - Battery Power Display: Once well paired with an IOS device?? battery power of this headset