Built-in microphone for hands-free calls, Siri and Google Assistant Compatible with all common smartphones and tablets Automatically turn on and connect the earbuds when you take them out of the case Incl. charging case with a charging capacity for approx. 4 charging processes Incl. USB charging cable Playback time approx.: 3.5 hours Talk time approx.: 4 hours Standby approx.: 120 hours Charging time case approx.: 3 hours, earphones approx.: 1.5 hours Bluetooth®** 5.0 for a longer range of up to approx. 15 m and faster transmission Battery charging case: 500 mAh, earphones: 30 mAh (each earphone)