Sony MDR-IF540RK Infrared Wireless Headphones

Pump up the volume and groove about your listening room as you enjoy music or TV soundtracks with the MDR-IF540RK wireless headphone system. This complete kit that includes a transmitter and headphones offers features like a lightweight, open-air design, 30 mm drive units for deep bass, automatic on/off, and a vibration function (with level volume) for an exciting game and movie experience. Other features include two audio inputs to accommodate audio and video sources, a rechargeable battery that sports up to 45 hours of battery life (optional alkaline battery), a transmission range up to 24 feet and a transmission coverage angle up to 90°. These headphones enable an easy connection to your home audio system, TV, PC 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 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 power switch for both the headphones and transmitter conserves battery life; when the transmitter senses an input signal, it turns on; 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.

Headphone Type: Open-air, Dynamic

Frequency Response: 18Hz - 22,000Hz

Effective Range: 24 ft (7m); 10 ft (3m) at ±45°

Driver Unit: 30mm

Volume Control: Rotary control

Diaphragm: PET

Magnet: Ferrite

Plug: UniMatch® Adapter

Phono Input(s): 1 (Stereo L/R phono plugs)

Power Requirements:

Battery Life (Approx.): 45 hours with alkaline batteries; 26 hours with NiMH batteries

Recharging Time: 24 hours