diameter unit: 40MM external magnetic/ ring range: 15-25000HZ/ product impedance: 32 ohms/ sensitivity:98 db/ headphone plug: USB +3,5*2/ microphone parameters: 6*5 MM/ microphone sensitivity: -38* -3 earmuffs: leather earmuffs/ microphone impedance: 22000 ohms/ directivity: omnidirectional/ connection method: wired/ headphone cable length: 2M tuning on the ear shell/ long microphone colorful breathing light