老人助听器 电池款助听器 扩音器 hearing aid k80 英文出口包装

描述

电声性能： 1.最大饱和声压级：≥120 dB 2.满档声增益：≥30 dB 3.平均增益：≥18dB 4.谐波失真： a)频率小于1000Hz时不大于10% b)频率大于1000Hz时不大于4% 5.等效噪声：≤50dB。 6.频率响应：不窄于250Hz～3500Hz Features Brand new and high quality hearing aid sound amplifier Super mini size and light weight, not easily to be seen Adjust volume to the minimum before wearing Increase volume gradually to avoid sudden increase in sound Convenient for watching movie, enjoying the drama, attending meeting, or having class, it could help you hear the sound clearly and loudly Specification: 1. Max sound output: 110±5dB 2. Sound gain: ≥30dB 3. Total harmonic wave distortion: ≤10% 4. Frequency range: 300-4000Hz 5. Input noise: ≤40dB 6. Voltage: DC1.5V 7. Current: ≤4mA 8. Color: As pictures Package Included: 1 x Hearing Aids 2 x AG3 Button Cells 1 x Instruction Manual 1 x Case 3 x Units of earplug of different size

规格