Newest Bluetooth 5.0- bluetooth earbuds adopt the most advanced Bluetooth 5.0 with TWS technology which provide more stable connection, faster paring and universal compatibility. Super lightweight and stabilizer design according to ear geometry to ensure a secure, comfortable fit for any ear. High fidelity sound-True wireless earbuds with 13mm vibrating diaphragm and HD rendering technology produce truly natural, authentic sound and powerful bass performance sound no matter in calls or in music time. 30 Hours playtime-Bluetooth headphones get 4-5 hours playtime from a single charge and 30 extra hours in the mini portable charging case. One step pairing- Auto power on and paring after taking the earbuds from the charging case. Meanwhile automatically power off and turn to charging mode after putting back into the charging case, auto cut off after fully charged. Super soft and secure fit -Due to the special ergonomic and fitness-oriented design, headset does not hurt your ears. keep it in place during your workout.