A. active trolley speaker B. USB/SD decoder C. built-in battery D. Wireless microphone

Active trolley speaker with USB/SD, built-in battery, wireless microphone

1. Power (RMS): 30W 2. Speaker units: 6.5'' *23. USB/SD decoder4. guitar input5. dynamic LED display6. Wireless microphone (1 pc)7. built-in battery (12V 7AH)8. support DC 12V power supply   9. movable, with wheels10. wooden box: 285*215*485mm  

active trolley speaker with USB/SD, built-in battery, wireless microphone