Colors for choice 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 Type of device interface: USB Battery capacity: 2000mAh Frequency response range: 20Hz-20KHz Output power: 5W Signal to noise ratio: 85db Power mode: built-in lithium battery Channel: 2.1 Play time: 8 hours Bluetooth protocol: 5 Number of speakers: 1 Effective distance: 10 meters Function: card, dustproof, anti-drip, call function, NFC function Working mode: button Display: None Playback format: MP3 Material of the shell: plastic Support format: TF card Speaker adjustment method: button Is there a radio function: Yes Material of the shell: ABS Appearance size: 74 * 74 * 123mm Weight of the product: 0.35 (KG)