variety of colors to choose from Default color is black If you need to change other colors Please leave message to us for change within 12 hours of order submission Type: Bluetooth speaker Connection method: Bluetooth connection Interface type: USB Battery capacity: 3000mAh Frequency response range: 80Hz-20KHz Output power: 10W Signal to noise ratio: 70db Power supply mode: built-in lithium battery Channel: 2 game time: 8 hours Bluetooth protocol: 4.2 Number of speakers: 2 Effective distance: 10 meters Function: voice prompt, card insertion, radio, call function Working mode: button Display: None Playback format: MP3, WMA Shell material: metal Support format: TF card Speaker adjustment method: button Is there a radio function: Yes Box material: plastic Appearance size: 90 * 114 * 122mm Weight of the product: 0.5 (KG) Packing list: box of e color, wire, manual Power Mode: USB