1.Active Noise Cancelling technology,enjoy the pure sound quality.
2.Biological protein earmuffs, soft and comfortable.
3.retractable headband to fit everyone well.
4.Full-featured, audible music, call, power display, multi-point connection.
5.Both wired and wireless is OK.
6.engineered with CSR8635 chipset. Stream music to the headphone from your device with a 20-meters wireless range.