W5 Manno headphones with in-line microphone and single operation button, 40mm speaker soft earmuffs and adjustable head beam1. 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.