Describe:
Color: blue, black, red
Function: insert card, voice prompt
Connection method: Bluetooth connection
Interface type: USB
Power supply mode: need external battery
Expansion storage: 32GB
Operation mode: button
Display: Yes
Play format: MP3
Shell material: plastic
Support format: TF card
Speaker adjustment method: button
Appearance size: 230*110*50mm
Product weight: 650g
Power supply mode: USB
Frequency response: 100Hz-18KHz
Signal to noise ratio: ≥70db
Rated power: 3W
Transmission distance: 10 meters
Battery capacity: 500 mAh
Rated voltage: DC 5V
Packing list: Bluetooth speaker, charging cable and audio combo 1 (without battery)