Sennheiser RS135-9 Open Supra-Aural Wireless Headphone System (Black)

The RS 135-9 continues the tradition of Sennheisers wireless headphone premium selection using RF technology to give you the best performance in transmission range and sound. Using 900 mHz RF technology RS 135 will operate up to 330 feet through walls and ceilings. Additionally the headphones open-air design ensures excellent acoustic performance. The RS 135 wirelessly enhances your experience of listening to TV movies or virtually any other audio source; without disturbing those around you. The included rechargeable have an operating time of up to 20 hours. Sennheiser RS 135-9 Wireless Headphone System Highlights: Open supra-aural headphones with excellent RF wireless audio transmission Detailed warm sound reproduction with strong bass Suitable for all types of modern music and TV applications Wireless freedom of reception through walls and ceilings up to 100 meters (330 feet) Volume and tuning controls conveniently located on the headphones Lightweight headphones with high wearing comfort Compatible with the HDR 120 supplemental headset What's in the Box: 1 pair of HDR 135-9 headphones 1 TR 135-9 transmitter with audio connecting cable 1 mains unit 2 rechargeable NiMH 1.2 V size 1 adaptor (3.5 mm jack to 6.3 mm / 1/4 jack) 1 adaptor (3.5 mm jack to RCA) 1 Manual 1 Safety Guide Specifications: HDR 135-9 (Receiver) Transducer principle: Open dynamic Ear coupling: Supra-aural Frequency response: 22 19500 Hz Impedance: 24 ohms THD at 1 kHz 100dB SPL: 0.7 % Sound pressure level: 106 dB Power supply: 2 Operating time: Approx. 20 hours Weight: 8 oz. (230 g) TR 135-9 (Transmitter) Modulation: FM Stereo Power supply: 9 V DC Power consumption: 1.8 VA Signal-to-noise ratio: 65 dBA Connector: RCA phono plug 3.5 mm / 6.3 mm stereo jack Weight: 7 oz. (200 g) Dimensions: 3.34 x 8.85 x 5.23 in (85 x 225 x 133 mm) Frequency range: 926.15 MHz 927.55 MHz Number of channels: 3