CABLES UNLIMITED SPK-VELO-4KIT2W AUDIO UNLIMITED(R) PREMIUM 900MHZ WIRELESS INDOOR/OUTDOOR 4-SPEAKER SYSTEM WITH REMOTE & DUAL POWER TRANSMITTER, WHITE Cables Unlimited Spk-Velo-4Kit2W Audio Unlimited(R)Premium 900Mhz"Wireless Indoor/Outdoor 4-Speaker System With Remote & Dual Power Transmitter Phase Loop Lock Circuitry Automatically Locks In & Keeps Audio Signal Clear & Strong. 900 Mhz Transmitter Sends Audio Signals Without Speaker"Wire. 10W Rms, 20W Max Output Per Speaker. 3" Polypro Ylene Woofer With Rubber Edge. White.