Design with touch sensor for sport, workout, running, jogging, hiking, biking, gym etc.::Comfortable to wear, self-adjusting, not easy to fall off::Up to 10 hours of total playback (2-3 hours on the ear buds & 10 hours on the charging case)::LEFT EAR: Touch, pause/play, call answer/hang up. Touch 2 times, the next one. Touch 3 times to decrease the volume, short press open voice assistant, RIGHT EAR: Touch, pause/play, call answer/hang up. Touch 2 times, the last one. Touch 3 times to increase the volume, short press open voice assistant.