1. Active noise reduction, reduce more external noise, touch to operate various playback functions, touch up and down to adjust the volume, press to play and pause music.
2. 4 pairs of silicone earplugs to meet the wearing needs of more ear shapes and bring good sound insulation effect.
3. Built-in speaker, buzzer positioning.
4. Transmission distance: 20m
5. Material: PC+ABS+Metal