Technical parameters:Speaker diameter: Φ30mm;Speaker impedance: 32Ω;Frequency response range: 20HZ 20000HZ;Headphone sensitivity: 105dB S.P.L at 1KHz;Rated power: 20MW;Power capacity: 100mwWire: 2.2 ± 0.15mPin size: 3.5mm stereo; Headphones sensitivity: 58dB ± 3dbMicrophone impedance: 2.2KΩMicrophone frequency response range: 30HZ 16000HZMicrophone operating voltage: 3v   

Back hang earphone – back hang design, portable, gloss surface treatmentMain features:1, black gloss design, simple style2, back hanging earphone, light design, easy to wear;3, hi-fi speakers, pure sound;4, non-toxic environmentally, halogen-free TPE cable, durable and tactile;5, metal microphone, facilitate dialogue;6,3.5 mm silver-plated plugs, pure sound quality.7, sponge earmuffs, fresh, anti-sweat.

Neck-band Headphone H820