DW09 HD Sound Quality Portable USB Luggage Bluetooth Speaker(Blue) Tape-Doorbells 5cm * 11cm * 6cm

5cm * 11cm * 6cm / 6

eliminating the trouble of frequent battery replacement

Status of telephone line test: use the transmitter only to test the status of working telephone lines

e-ticketing bus

easy to fit the pressing screen

DW09 HD Sound Quality Portable USB Luggage Bluetooth Speaker(Blue) Tape-Doorbells 5cm * 11cm * 6cm1. ABS environmental protection material, skin friendly feel 2. Built in high definition microphone, hands free calls are clear and not stuck 3. Bluetooth stable transmission, low latency and no lag 4. Warm atmosphere night light, bluetooth speaker 5. Material: ABS + electronic components 6. Input current: 1A 7. Output power: 3w 8. Working voltage: DC 5V 9. Power supply mode: USB charging built in lithium battery 10. Battery capacity: 400mah 11.