Possess below 6 functions: 1. Connect with computer / TV / VCD / DVD / CD / MP3 2. FM radio receiver 3. Wireless Net audio chat 4. Can be used as wired headset 5. LED color light used at night 6. Excellent voice quality Specifications: 1. Transmitting frequency: 84-87MHz 2. Power supply: 2*AA DC 1.5V batteries 3. Receiving frequency: 84-108MHz 4. Max. receiving range: 30m 5. FM radio frequency: 88-108MHz 6. Effective distance: up to 30m