JLab Audio - Fit Sport Fitness Earbuds Wireless In-Ear Headphones - Black/Blue New Open Box - Minor cosmetic blemishes if any Box is a bit distressed Features Bluetooth interface Enables simple wireless pairing with your Bluetooth-enabled device. Rechargeable battery Offers up to 6 hours of use on a charge. Water- and sweat-resistant Helps prevent sweat and water from entering the headphones. In-ear design Fits securely and directs music into your ears for full, uninterrupted audio. Headset controls Include volume, play/pause and next/previous track. Built-in microphone Enables simple hands-free chatting via a compatible device. Stereo design Delivers crisp tones.