Califone DM-39 handheld cardioid unidirectional microphone, 600 ohm, high sensitivity response, 30 ft cable, 1/4" Plug, rugged brushed finish with high sensitivity response and a rugged brushed finish, The DM-39 is perfect for vocal presentations TS universally formatted 1/4" Connections plugs into great Califone quality sound. Key features 600 ohm dynamic microphone 30 ft cable 1/4” plug high sensitivity response Approved Safe for use in school, business, government and church facilities Specifications directional characteristic: cardioid unidirectional frequency response: 50 - 15kHz Impedance: 600 ohms 30% sensitivity: -75dB 3dB