The Sony Wireless Headphone System has everything you need to enjoy your music without wires: a high-powered transmitter/recharger, headphones powered by a rechargeable battery, a connecting cable, a UniMatch plug adapter, and an AC power adapter. The system easily connects to TVs and VCRs as well, letting you turn up the volume while people nearby are sleeping or wanting some quiet time. The system has a maximum range of 24 feet and a transmission angle of up to 90 degrees, and lasts up to 35 hours on a full charge. The open-air design of the headphones lets in ambient sound. You can recharge the battery by placing the headphones on the transmitter.

Volume control is provided in one earpiece that adjusts volume for both channels, ferrite magnets ensure the ample production of sound, and a self-adjusting headband automatically adjusts to your head's shape for maximum comfort. The system automatically turns on when you put it on your head, so there are no cumbersome switches or buttons to flip on.

Get ready to rock with Sony's MDR-IF240RK Wireless Stereo Headphones System! This complete kit which includes a transmitter and headphones offers features like a lightweight, open-air design, 30 mm drive units for deep bass, up to 60 hours of battery life with an optional alkaline battery or up to 35 hours of battery life with the supplied NiHM rechargeable battery, and a transmission range of up to 24 feet. Also, utilize the transmission coverage angle--up to 90°. Permitting an easy connection to your home audio system, TV or VCR, the MDR-IF240RK provides a personal entertainment experience you can move to.

Features:

 
• 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 18 Hz
• Rechargeable Battery (supplied) saves repeated trips to the store; automatically recharges when you place the headphones on the supplied transmitter
• Up to 100 Hours of Battery Life with optional AA alkaline battery; up to 30 hours life with supplied rechargeable NiCad battery
• Complete Kit including high-powered transmitter/recharger, headphones, rechargeable battery, connecting cable, UniMatch plug adapter, and AC power adapter
• 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 22,000 Hz
• 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
• Effective Range: 24 feet (7 m); 10 feet (3 m) at ± 45°
• Power On/Off: Automatic On/Off switch
• Headphones type: Open-air, dynamic, Cordless
• Headphones drive unit: 30 mm
• Headphones diaphragm: PET
• Headphones magnet: Ferrite
• Headphones frequency response: 18 - 22,000Hz
• Battery Life: Approx. 35 hours with optional NiCad battery; approx. 60 hours with optional alkaline battery
• Recharging Time: Approx. 24 hours
• Headband: Wide, self-adjusting
• Power On/Off: Automatic switch
• Volume Control: One
• Weight: Headphones: 6.3 oz. (180 g) (including battery), Transmitter: 4.4 oz. (125 g)
• Supplied Accessories: Rechargeable NiCad battery NC-AA-HJ, AC adapter, connecting cord, UniMatch plug adapter

Get ready to rock with Sony's MDR-IF240RK Wireless Stereo Headphones System! This complete kit which includes a Transmitter and Headphones offers features like its lightweight, open-air design, 30 mm Drive Units for deep bass, up to 60 hours of battery life with an optional alkaline battery or up to 35 Hours of Battery Life with the supplied NiHM Rechargeable Battery, and a Transmission Range up to 24 feet. Also utilize the Transmission Coverage Angle - up to 90 degrees. Permitting an easy connection to your home audio system, TV or VCR, the MDR-IF240RK provides a personal entertainment experience you can move to.