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$18.99 $19.99
Nov 22, 2020
1  Likes 0  Comments

About this Deal

Item specifics
output power: 3.6mW
the maximum sound output: 130 ± 4 decibels
sound gain: 30 decibels
frequency range: 100--4000 Hz
equivalent input noise: ≤ 28 decibels
harmonic distortion: ≤ 6%
continuous working time: ≥ 15 hours
battery capacity: 40 mA battery is a rechargeable battery
working current: ≤ 3 mA
working voltage: 1.2V
Sound impedance: 110 ohms
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