Sennheiser HDR 160 - Supplemental RS160 Wireless Headphones (Charger/Transmitter not included)

The Sennheiser HDR line is an excellent add-on to the Sennheiser RS 160 Digital Wireless Headphone System. Up to four individual headphone receivers can be used with each system - perfect for family movie night or for use in waiting rooms. The HDR line does not include the transmitter. The headphones' leatherette earpads and headband cushions provide outstanding comfort while their closed, around-the-ear design prevents sound leakage. Soundwise, the bass delivery is rousing and full-bodied while the closed, snug fit around your ears effectively isolates outside noise. Carrier frequencies 2.4 - 2.48 GHz Range approx. 65.61ft. in the open area Audio input 3.5 mm stereo Power consumption < 0.3 W Power supply 5 V DC, 500 mA; 2 Alkali-Akkus Typ AA (1,5 V) Signal-to-noise ratio 85 dBA (0.5 Vrms, 1kHz) Operating time approx. 24 hours Transducer principle closed, dynamic Ear coupling circumaural Sound pressure level (SPL) 106 dB THD, total harmonic distortion