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yiwu biotect medical Co.ltd 2yr.
Main Products:医疗器械
Contacts:ElenaChat
Mobile:86-13516898881
WhatsApp:+8613516898881
E-mail: WeChat:biotech0529
Address:24657, 5 Street, 2 F, 59 Gate, International Trade Mart (District 3).
Address:TREET
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Max Sound Output: 129dB ± 4dB
Max Sound Gain: 50dB ± 5dB
Harmonic Wave Distortion: ≤5%
Frequency Range: 450~3500 Hz
Input Noise: ≤30 dB
Battery: AG13
Working Voltage dc1.5V
Working Current: ≤4mA
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