Adjustable headband great for classroom, and public settings
3.5mm Plug and 5 ft. Cord, compatible with all 3.5mm jack devices
Speaker size: 40mm. Directivity: omnidirectional
Frequency response: 20hz - 20Khz, impedance: 32 ohms
Sensitivity: 108Db, rated power: 100Mw
Connectivity Technology: Wired
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