Just about everyone would I agree, I think, that wires on headphones are just about the most annoying wires associated with any electronic device. When you listen to music you don't want to have to stay in anyone one place, and you don't want to have to worry about cords tripping you are pulling your headphones down. The answer to this problem is wireless headphones, many of which allow you to listen to music over 100 feet away. They, like all wireless devices, give you a sense of freedom, an ability to move, work, and play wherever you want. You will find here a list of some of the most popular wireless headphone devices, with important information about each.

RCA WHR120 Infrared Wireless Stereo Headphones

Manufacturers Description: Experience the freedom that RCA Infrared Wireless Headphones can provide. You don't have to be chained to your stereo when you put on a pair of headphones. With the infrared, line-of-sight transmission, you have 23 feet to roam as you please. Also, the base doubles as a convenient charger and stand. And the lightweight design and adjustable band make for a comfortable, snug fit. Enjoy life with RCA technology.

Key Features:

- Provides convenient listening privacy in the same room

- Low cost infrared technology operates up to 20 ft. from transmitter

- Adjustable headband provides comfort for hours of listening pleasure

- Horizontal style transmitter is compact, saves shelf space

- Operates on Two "AAA" size rechargeable batteries (connect to transmitter for recharging)

Price: $25

RCA WHR150 Wireless Stereo Headphones

Manufacturers Description: Hear your stereo outside your house without disturbing the neighbors. With RCA Wireless 900 MHz Headphones, you don't even have to be in the same room with your stereo. The 900 MHz signal can pass through walls, floors, and carry outside of your home up to 125 ft. That means you have the freedom to work or relax wherever you wish without the problem of being connected to cords or carrying around a portable system. The lightweight design and adjustable headband make the fit so comfortable that you will hardly notice you have them on, as you move freely about your home. Also, the unique compact base serves as both a charger and a stand. Add some freedom to your life with this innovation from the RCA brand.

Key Features:

- Transmits 900MHz stereo signal up to 125 ft.

- Goes through walls and floors

- Unique compact base serves as both a charger and a stand

- Lightweight design with adjustable headband

- Soft earpads for comfortable listening

Price: $75

Sony MDRRF920RK 900 MHz Wireless Headphones

Manufacturers Description: 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.

A powerful ARM processor lets you listen to MP3s while looking up an address or scheduling an appointment. Watch the latest movie trailer or a new sales video. Carry digital photo albums of friends and family, students and co-workers, even the latest real estate listings. Plus it's expandable, and with 32MB of memory there's plenty of room to customize from more than 18,000 applications (sold separately).

Key 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.

Price: $50

Sennheiser RS-65 Hi-Fi Stereo Wireless Headphones

Manufacturers Description: The RS-65 wireless RF headphone system with open, circumaural headphones features an integrated, switchable SRS processor for impressive surround sound. The system has very transparent and balanced sound reproduction and comes equipped with Center-Lock TM Auto-Tuning. This feature allows you to automatically adjust to the transmitter with a simple touch of a button (and can simply be returned with a second touch if it locks on to your neighbor's transmitter).

Features:

- Supra-aural, hi-fi stereo headphones for superb audio quality

-Volume and transmission channel can be set individually on the headphones

- Expand with an additional set of headphones for multiperson use

- Soft, cloth-covered earpads and headband cushion for comfortable extended use

- Transmission range: 300 feet

- Extremely lightweight - less than 6 ounces

Price: $180

Sennheiser RS-85 Hi-Fi Stereo Wireless Headphones

Manufacturers Description: The RS-85 wireless RF headphone system with open, circumaural headphones features HiDyn Plus noise reduction for wide dynamics and superb sound quality, ensuring a very natural and detailed sound reproduction. The RS-85 comes equipped with Center-Lock TM Auto-Tuning, which allows you to automatically adjust to the transmitter with a simple touch of a button (and can simply be returned with a second touch if it locks on to your neighbor's transmitter). The RS-85 headphones feature reception up to 300 feet from the transmitter, through walls and ceilings, even outside the home. A second battery pack is also provided for near limitless use; simply charge one as the other is being used.

Price: $250

Bradley James is a senior editor at SciNet.cc, a website containing many helpful consumer electronics review articles. For more information on wireless headphone technology, please visit our wireless headphones webpage.