1. Speaker: 40mm, impedance: 32Ω±15%, frequency response: 20~20000Hz, sensitivity: 96dB±3dB.
2. Cable length: 1.2m.
3. Line control with mic: single functional key to operate music playing and answer calls, compatible with iOS and most Android versions.
4. Soft sponge earmuffs for comfortable wearing.
5. Adjustable head beam.