Transmitter Specification: Transmitter frequency range: 49.86MHz Power source: Four AA batteries or DC 9V Audio input: Max.: 500mV Receiver Specification: Receiver frequency range: 49.86MHz Signal to noise ratio: Min. 25 dB Audio frequency response: 80Hz-14KHz Tweeter size and power: 1.2" 3W Subwoofer size and power: 5" 12W Power source: Batteries or DC12V Impedance: 4 ohms Speaker Case Specification: Product Size: 20x20x31cm Product Weight: 3.5KG White box size: 21.5x21.5x43cm Color: Black/white Material: Plastic Detail Feature: 1. This wireless speaker can let you enjoy you favorite music anywhere and anytime in the hourse or outside. 2. It can simply connect to most of audio source and any audio device with an output jack such as CD, DVD, TV, MP3, stereo, PC, laptop, MAC, iPod, home theater. 3. The power source is by batteries or using the includede AC adapters. 4. It have blue LED, can illuminate the speaker when use in night. The bule LED light is very bland, can give you very romantic feel with the sweetness music. 5. Waterproof 6. Built-in subwoofer and tweeter 7. The receive signal up to 100feet. 8. The wireless speaker includes speaker system, transmitter, cradle adapter, AC adapter, audio cables