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BRAND NEW Original guarenteeee The Sennheiser RS120 headphone set lets you enjoy sound with the full freedom of movement It is a portable on-ear wireless headphone without the inconvenience of cumbersome cables You can plug the wireless transmitter into any digital device or home theater system Without the inconvenience of the cable you can freely move around your studio office or home These devices are ideal for long music listening TV watching or video gaming sessions It will become one of your essential listening accessories Sennheiser RS120s are designed to look and feel good The on-ear headphones are all-out black The transmitter base stand has a modern elliptical pyramid shape The front of the stand is white and the back is black With the metallic rod as a holder it is also the charging station When you store your wireless headphones the stand looks like a futuristic decorative piece You can mount the stand on the wall for convenience or style The plush ear pads are replaceable so that you can change them after a long service life These Sennheiser headphones have a nice mesh design on the ear cups to give them a modern look At 230 grams they are lightweight and you can comfortably use them for extended periods of time The box contains the HDR 120 headphone and the TR 120 transmitter base A power cable is provided to connect to the TR 120 The accessories box also has two adapters: an RCA to 3 5-millimeter and a 3 5-millimeter to 6 3-millimeter The TR 120 has an attached audio cable that ends in an RCA connector The adapters can be used to connect to various types of electronics You can check the type of headphone jack or audio output your digital device provides to find the proper connectors The accessories box also has two AAA NiMH rechargeable batteries The batteries go under the ear pads of each of the ear cups. http://en-uk.sennheiser.com/wireless-headphones-stereo-rf-rs-120-ii Features Open, stereo, supraaural, wireless RF headphone system Detailed, analytical sound reproduction with strong bass response Suitable for all types of modern music and TV applications Wireless freedom with reception through walls and ceilings Range of up to 100 metres (300 feet) Control elements conveniently positioned to provide easy, intuitive operation Transmitter with metal cradle for storing and recharging the headphones Optional wall mounting of transmitter possible Very lightweight headphones, extremely comfortable to wear Appealing, modern design Rechargeable NiMH batteries included (size: AAA) Technical Data Color silver Impedance 24 Ω Dimensions 85 x 225 x 133 mm Connector Jack 3,5 mm/6,35 mm stereo Frequency response 22 - 19500 Hz THD, total harmonic distortion Ear coupling Supraaural Transducer principle Open, Dynamic Weight Receiver: 230 g (inc. Batteries) Weight Transmitter: 200 g Power consumption Signal-to-noise ratio > 65 dBA Operating time 20 h Modulation FM stereo Power supply Receiver: 2 AAA cells-rechargeable Power supply Transmitter: 9V bloc SPL for peak deviation 106 dB