C2G/Cables to Go Audio Unlimited Premium 900MHz Wireless Indoor/Outdoor 2 Speaker System with Remote and Dual Power Transmitter, Black (SPK-VELO-003) Powered by 900MHz Phase Loop Lock circuitry which automatically locks in and keeps the audio signal clear and strong within a range of up to 150 feet with no line of sight limitations The system transmitter supports all types audio inputs including RCA inputs for home theater receivers, MP3 players, computers, iPods, iPhones, and iPads. Audio Unlimited's wireless speaker system is the perfect solution for adding music around the pool/spa, on the patio, near the BBQ, in your office, garage, in the garden, or out on the deck during those hot summer nights. Add additional Audio Unlimited speaker to enhance your listening experience, cover large areas or create a multi-room sound system Height, width of Speaker itself: 130x265mm. Weight: 8.5 lbs, Woofer: 3 inch rubber edge, Tweeter: 2 inch mylar cone, Output Watt RMS: 10 watt RMS/20 watt max. Transformer: DC 9V