Overview

Tired of tripping over cords, and accidentally ripping out headphone jacks? Go wireless, and listen to the freedom. Sony's MDR-RF920RK 900 MHz RF Wirless Headphones have a transmission range of 150 feet, allowing you to roam your house or yard without missing a beat (or word). The 900 MHz radio frequency delivers high quality sound, and the 30mm driver units provide deeper bass, lower distortion and a wider dynamic range. These lightweight headphones are easily recharged by placing them on the transmitter, and the package includes rechargeable NiMH batteries.

Features

• Wireless Design lets you move inside and outside your house and still enjoy music and TV sound, and lets you turn up the volume late at night without disturbing others.  • 150 Foot Transmission Range for listening enjoyment upstairs, downstairs, virtually everywhere in your home and outside in your backyard.  • 900 MHz Radio Frequency (RF) Transmission provides better sound quality and greater range.  • 30mm Diameter Driver Units are larger than many portable headphones for deeper bass, lower distortion and wider dynamic range; low frequency response extends down to 20Hz.  • PET Diaphragms ensure high rigidity for minimum distortion, and low mass for excellent high-frequency response.  • Ferrite Magnets combine high energy and small size for ample sound output.  • Comfortable Open-Air Type Supra-Aural Headphones fit securely for maximum frequency response reception.  • Double Headband with self-adjusting mechanism conforms to the curve of your head for a fit.  • Easy Rechargeable Battery System automatically charges the headphones when placed onto the transmitter.  • 3 Transmission Channels Available helps ensure optimum signal reception; convenient sliding selector control on the side of the transmitter.  • Automatic Power On/Off for both headphones and transmitter conserves battery life; transmitter turns on when it senses an input signal; headphones turn on when you place them on your head.  • Complete Kit is supplied, which includes transmitter, headphones, connecting cord, UniMatch® plug adapter and AC power supply.  • Supplied Connecting Cord goes directly to headphone output of your high fidelity system for easy connection to hi-fi system, TV or VCR.  • FM Transmission System resists static and distortion for higher fidelity.  • Included Rechargeable NiMHBatteries provide up to 18 hours of playback when fully charged.

Specifications

• RF Modulation: Frequency modulation  • RF Carrier Frequencies: Channel 1: 913.5 MHz Channel 2: 914.0 MHz Channel 3: 914.5 MHz Effective Range: 150 feet  • Power Requirements: AC 120Vm 60Hz when used with supplied AC power adapter which connects to the DC 9V jack. • Audio Input: Stereo L/R phono jacks Supplied 3 ft. connecting cord goes from stereo mini plug to L/R phono plugs Supplied UniMatch plug adapter converts stereo mini plug to stereo phono plug  • Headphones: Type: Open air, dynamic, wireless Driver unit: 30mm diameter, dome type Diaphragm: PET Magnet: Ferrite Headband: Double band, self-adjusting Frequency Response: 20-20,000Hz Sensitivity: 105 dB/mW Impedance: 24 ohms at 1 kHz Tuning: Manual Volume: Rotary control Power Handling Capacity: 1000mW (IEC)  • General: Transmitter: 150 feet (46m) Power Requirements: Headphones: NiMH battery (supplied) Transmitter: 9V AC with supplied adapter  • Power: Battery Life: Approx 18 hours with fully charged Ni-MH battery (included) Battery Life: Up to 28 hours with optional AAA Alkaline type batteries  • Supplied Accessories: AC Adapter, 9V, Connecting cord UniMatch® plug adapter  • Optional Accessories: Audio Cord: RK-G136, RK-C310, RK-C315 Plug Adapter: PC-236HG  • Weight: Headphones: 9.5 oz (270g) w/batteryTransmitter: 6.9 oz (195g)  • Dimensions: Transmitter: 5.25" x 4.9" x 5.35" (133 x 124 x 136mm)