Product Description
Max Sound Output: 130±5 dB
Max Sound Gain: ≥50 dB
Harmonic Wave Distortion: ≤5%
Frequency Range: 300~4000 hz
Input Noise: ≤30 dB
Battery: 5# Dry battery
Max Working Hours with Standard Battery: 80 h
Working Voltage: D.C. 1.5V
Working Current: ≤4 mA
Measurement: 6.1×4.1×1.6 cm
Net Weight: 66 g (without Battery)
Special Function Key: N-H Key
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