Read more Fabric Outdoor Wireless card Power supply Mode: Built-in lithium battery. Function: Card bass stereo. Whether the APP is supported: Yes. Connection mode: Bluetooth connection. Small rated power: 10W. Bluetooth version: 4.2. Shell material: plastic. Support format: U Disk TF card. Receive distance: 10m and below. Speaker adjustment：Mode: Key color classification: Red, Gray, blue, black. Size: 74x74x95mm. Playback Length: 3 hours +. Weight: 263g. Battery capacity: 1200 MA.