mini multi-function Bluetooth speaker customized

Power supply: Built-in lithium battery
Play format: MP3, WAV
Packing list: Audio charging cable instructions
Display: None
Speaker adjustment: Knob
Battery capacity: 1200mAh
Functions: card, radio, call function
Power mode: USB
Color: black, wood
Box material: Wood
Supported format: TF card
Extended storage: 32GB
Type: Bluetooth speaker