Wireless Stereo Headphones System - Sony wireless stereo headphones system- Complete kit Including transmitter and headphones - Transmission range up to 24 feet - Battery is automatically charged by placing headphones on the cradle - Transmission coverage angle up to 90° - Easy connection to home audio system, TV or VCR- Cordless design lets you move around the room and still enjoy music or TV sound tracks; lets you turn the volume up late at night without disturbing anyone else - Easy connection to TV, VCR and audio systems, through the supplied connecting cord and plug adapter - Light weight so you can wear them comfortably for hours on end - Open-air design lets you continue to hear ambient sound - High-power infrared transmitter incorporates multiple Light-Emitting Diodes (LEDs) for extended coverage range - 24 Foot transmission range for listening enjoyment throughout the room; lets you sit back from the TV set and still enjoy TV sound - 30 mm Diameter drive units are larger than many portable headphones for deeper bass, lower distortion and wider dynamic range; frequency response extends down to a low 18Hz - Rechargeable battery (supplied) saves repeated trips to the store; automatically recharges when you place the headphones on the supplied transmitter - 90° Transmission angle (maximum) for uninterrupted listening as you move around the room - PET Diaphragms ensure high rigidity for minimum distortion; low mass for extended high-frequency response out to 22,000Hz - Ferrite magnets combine high energy and small size, for ample sound output - Wide headband with a separate self-adjusting band conforms precisely to the curve of your head; stays comfortable, even after listening for hours on end - Mute Function to avoid noise through the headphones; cuts out the sound when no audio signal is available - Automatic headphones power switch conserves battery life; the headphones turn on when you place them on your head - Single volume control in one earpiece conveniently adjusts the volume for both channels - Supplied connecting cord with Sony UniMatch® plug that goes to the headphone output of your high fidelity system, TV set or VCR; UniMatch system accommodates either the phone jack on high fidelity components or the minijack found on video components - Infrared modulation: frequency modulation - Infrared carrier frequencies: right 2.8MHz, left 2.3MHz - Transmitter power requirements: AC 120V, 60Hz when used with supplied AC power adaptor, which connects to the DC 9V jack - Audio input: stereo L/R phono plugs; supplied 3-foot connecting cord goes from stereo mini plug or phone plug to L/R phono plugs - Battery life: approx. 35 hours with optional NiCad battery; approx. 60 hours with optional alkaline battery - Recharging time: approx. 24 hours - Headphones weight 6.3 oz. (including battery)- Complete kit including high-powered transmitter/recharger, headphones, rechargeable battery, connecting cable, UniMatch plug adapter and AC power adapter - Compatible models: DVP-NS425P, MFM-HT205 - BlackSYMDRIF240RK