Playback Function: MP3 Cabinet Material: Metal Model Number: Bluetooth stereo Speaker Structure: Bookshelf Loudspeaker Accommodation Mode: Button Display Screen: No Type: Active Package: Yes Special Feature: Wireless Audio Classification: Combination Speaker Type: Surround Interface Type: USB Display Type: None Radio: Yes Material: Metal Remote Control: No Use: Home Theatre,Portable Audio Player,Mobile Phone,Karaoke Player,Computer,Stage Channels: 8 (7.1) Condition: wireless speaker Bluetooth range: 10 meters Input sensitivity: 500MV Frequency range: 60Hz~18KHz Signal-to-noise ratio: 80dB Play time: 5-8 hours Charging time: about 3-4 hours Rated power: 3w+3w Dimension: 11*2.75*2.3 inch FM/USB/TF/AUX