An improvement over the popular DS7000, the DS71000 has larger sound drivers. With over the ear earpads design, and softer pads, it is now even more comfortable during extended use.   2.4GHz Radio Transmission This system uses high quality 2.4GHz digital radio transmission system with a maximum radius of 30m. As it is radio transmission, the headphones do not need to be within line of sight of the base unit. You can be reasonably anywhere and still enjoy the same high CD quality sound. This is also the frequency of some medical and scientific devices, and also of low powered radio station. To minimise interference, separate the distance between them. Real Time Channel Selection feature ensures smooth transmission by actively avoiding interference from other devices. It constantly monitors the airwave for a clean channel and switches to it. 7.1 Channel With Virtual Phones Technology, you can experience the sensational 7.1ch surround soundscape.		Contents .. Sony MDR-RF7100 Cordless Headphones with built-in Lithium ion Battery Sony DP-RF7100 Base Unit 2x AC Adapter, world voltage 100~240v Headphone stand Optical cable Japanese manual but with adequate diagrams. Supplied by Authorized Resellers in Japan. Japan Warranty 1 year on labor & parts from the day we sent your parcel. We can help you liaise with the Japan repair centre. You will pay for postages to/from our Japan office, and within Japan.
Large 50mm sound driver The older DS7000 headphones is fitted with 40mm sound driver. With a larger sound driver, you now get a stronger, clearer soundscape. The Center Level lets you adjust the volume for better dialogue clarity.     Compact Base unit The processor is powerful yet small, taking up an inconspicuous space on your TV bench.
Comfortable Earpads Large around ears pads, smooth leather, extra soft padding   Share the joy You can buy more Sony MDR-RF7100 Cordless Headphones and have them all share in the same surround soundscape as you. Comes with a unique stand specially designed only for the headphones.
2 AC adaptors: 1 to power the base unit, and 1 to charge the headphones with built in Lithium ion rechargeable battery. Wireless Headphones Type Close dynamic Driver Size 50mm CCAW Frequency Response 6~25000 Hz Power Built-in Lithium ion Weight 325g   Total Weight in Retail box 1.4kg   Base Station Format Dolby Digital, Dolby ProLogic IIx, DTS-ES, MPEG-2 AAC Mode Effect Cinema, Game Range radius 30m Input port Digital Optical toslink with Thru x2 Analog RCA L/R x1 Dimension 146x36x146 mm Weight 280g