Impedance: 16 ohms Stereo 
-  Interface Output: Max - working output 20mW, 20mW 
-  Speaker diameter: 16.1mm 
-  Plug: 3.5mm mini-jack 
-  Power supply: Power is supplied by computer/recorder 
-  Dimensions: 150 x 150mm 
-  Cord length: 3.9m 
-  Supplied with two spare sets of foam earpiece covers 
-  OEM: V4591300E000