Product Features:

• Type Material: Mold(Silver Metaric painted)
• Frequency level: 80-20KHz
• Receiver(Speaker): Built in Receiver
• Function: Power ON/OFF, Vol.Contorol, Magnetically shielded
• Speaker Unit: Woofer 57mm diameter x1, Tweeter 30mm diameter x2
• Channel selection: Automatic Tuning
• Amplifier: Built in amplifiers
• Out Put Power: Total 4W
• Function: MEGA BASS, Reflector LED Switch
• Power Source: (2 Way power supply)DC 9V (AC adapter),Built in NiCd rechageable battery (x6)
• Battery life: About 3.5 hours
• Rechargeable time: About 20 hours
• Weight: 950 grams (Built in NiCd rechargeable battery)
• DIMENSIONS : 234 mm x 300 mm x 126 mm (WXHXD)
• What's in the box: Supplied AC power adaptor for Receiver (Speaker), Speaker, Receiver, and manual

Description:

The SRS-RF90R wireless speaker is an optional speaker for the SRS-RF90RK. This one-box speaker system provides a fifty-seven millimeter woofer and two, thirty millimeter tweeters. With four watts of output power, this system provides ample sound in a small package. The neodymium magnets in the tweeter provide high magnetic energy per ounce and produce a crisp, clear sound. Meanwhile, the sigma type magnet in the woofer produces deep bass. The built-in Mega Bass system further encourages a solid bass level.

You have two options for powering this speaker system. For unlimited power supply, use the AC adaptor. Or, use the rechargeable battery system for complete wireless listening. The built-in recharger will charge the batteries in twenty hours. A fully-charged battery will yield 3.5 hours of use. This speaker is portable, lightweight and stylish. Sony has even included a blue illumination color should you choose to highlight the speaker's high-tech look.

This wireless system uses 900MHz RF technology to transmit the music from sound source to speaker. With a 150 foot range, you should not have any problem in using this system properly. The built-in receiver in the SRS-RF90R has three channels to help with interference. The speaker will automatically choose which channel has the best reception, making the listener's job easy. This receiver is compatible with the transmitters on the MDR-RF915RK, the RF815RK and the RF945RK.

What's in the Box
Sony SRS-RF90R speaker, user's manual and a ninety day warranty.