Truly-wireless earphones Get in the zone, filter out background noise and stay focused on your music with Active Noise Cancellation (ANC). Download Jabra Sound+ App to enable. Rechargeable battery Offers up to 5.5 hours use on a charge (ANC on) Waterproof durability IP57-rated, with protection from dust and sweat allows you to wear headphones throughout your day with no need to worry about getting in the rain. Built-in microphone Enables simple hands-free chatting via a compatible device. Bluetooth 5.0 interface Enables simple wireless pairing with your Bluetooth-enabled device. Supports HFP, A2DP and AVRCP Bluetooth profiles. In-ear design Fits securely and directs music into your ears for full, uninterrupted audio. Headset controls Include volume, answer/end, play/pause, next/previous track, reject call and pair mode. 6mm drivers Deliver powerful sound. 20Hz - 20kHz headset frequency response Along with a 100Hz - 10kHz microphone frequency response ensures faithful sound reproduction. Stereo design Delivers crisp tones.