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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Power supply: 2 x 9V batteries (not included)
Power supply: DC 5V / 1A
Designed for primary and secondary school students' facial curves
Concave curvature radius: 25mm (MIN)
LED Connector: Helps locate the 16-pin diagnostic connector in dark or hard-to-reach places
HOPESTAR A40 80W Outdoor Portable Wireless Bluetooth Speaker, A40 % Stand Bracket Power supply: 2 x 9V1. Main control: AC6921A 2. Bluetooth version: 5. 0 3. Total power: 80W 4. Battery working time: 6 8h 5. Voltage: DC 7. 4V 6. Battery capacity: 12000mAh 7. Separation: about 90dB 8. Signal to noise ratio: about 80dB 9. Input sensitivity: 400mV 10. Output woofer: 50W 11. Tweeter: 15Wx2 12. Subwoofer size: 119mm 13. Waterproof and dustproof, suitable for harsh environments 14. Support microphone volume and microphone reverberation master volume