HiFi Deluxe Stereo Headphones, dynamic type, "closed back" design

- Driver unit: Neodymium magnet. 40 mm (1.625 in.) diameter
- Impedance: 32 Ohms @1Khz
- Sensitivity (SPL): 110 dB/mW @ max.power
- Power handling capacity: 100 mW max.
- Frequency response: 20 Hz- 20 kHz @ -3dB
- Cord length: 3 m (10 ft) long
- Plug: 0.125 in. Stereo mini-plug (Ø 3,5 mm / 0.1 in.)
- Weight: 137 g (4.8 oz.) without cord, 167 g (5.9 oz.) net
- Accessory: 0.25 in. (Ø 6,3 mm) Stereo jack plug adapter