true wireless earbuds, bluetooth 5.0 earbuds 40hrs cycle playtime with charging case, mini in ear hifi stereo waterproof ipx7 sport running bluetooth headphones built-in mic for sport/gym/work knpaimly <p> <b>advantages of knpaimly wireless earbuds:<br> </b> 1. knpaimly offers a pair of high-fidelity bluetooth wireless earphones with up to 40 hours of battery life.<br> 2. 2.you won't be worry about master-slave restrictions and enjoy one-click manipulation.<br> 3.suitable size, easy to carry, can use in anytime anywhere, achieve what you desired.<br> <br> <br> <b>specifications:<br> </b> bluetooth standard: bluetooth 5.0<br> operating range: 33 feet/10 meters (no obstacles between)<br> supporting protocols: a2dp/hfp/hsp/avrcp<br> charging time: 1.5 hours <br> talking/playing time: about 4-5 hours (varies according to volume level and audio content)<br> battery type: li-polymer<br> <br> <b>functions of mutifuction button (touch):<br> </b> volume +: touch 3 times of left earbud<br> volume -:touch 3 times of right earbud<br> previous song: touch twice of left earbud<br> next song:touch twice of right earbud<br> play/ pause: short touch of one earbud<br> pick up/ hang up phone call:short touch of one earbud<br> decline incoming call: touch and hold for 2s of one earbud<br> <br> <b>package contents:<br> </b> 2x wireless earbuds<br> 1x charging case<br> 1x usb charging cable<br> 1x user manual<br> <b>18 months after-sales service.</b> </p>