锶佳创意有限公司
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1. Input terminals: DCФ3.5DC Plug 4 2. Working voltage: 3.7V 3. Maximum output power: 90MW 4. Noise level :18db 5. Signal to noise ratio (SNR): ≥ 90db 6. Power supply: 600mA lithium battery 7. Rated operating time:≥28h 8. Noise Reduction Type: One-way feedback 9. Speaker diameter: Ф40mm 10. Speaker Impedance: 32Ω 11. Speaker frequency response: 20Hz - 20KHz 12. Speaker sensitivity: 115dB 13. Wire length: pvc wire, 1.2m