AKG K-935 Digital Wireless Home Headpohne - up to 30 m rang, digital 2,4 GHz connection, upt o 8 h battery-range, over-ear, semi-open, 40 mm drivers, 32 ohms rated impedance, 115 dB efficiency, frequency response: 16 - 22000 Hz, includes transmitter base and cable with 3,5 mm plug, color: white