Interconnection joint is 1.2 meters (3.94 feet) cable, end with a 3.5 mm (0.14 inch) plug specification index electrical impedance of 32 ohms audio frequency response of 100 Hz to 5 kHz (10 dB) amplifier capacity of 5 mW (1 kHz) of 114 dB SPL/receiver sensitivity (each receiver 1 mW) mechanical index weight 25 grams (0.06 pounds) color dark grey order information LBB 3442/00 single light single headsets, 1.2m (3.94ft) cable with 3.5mm (0.14in) right-angle gold-plated single channel plug at end. Order number LBB3442/00