Description:
Bluetooth type hearing aid A-155
A-155 is a rechargeable hearing aid with attractive design appearance, it looks like a Bluetooth, work for about 20hours after fully charged
Earphone and easy for carry, you can use 2way of with ear hook and without.

Product Details:
Model Number: A-155
Type: Rechargeable Bluetooth hearing aid
Category: Hearing Health Products
Feature: Analogue, Rechargeable, Bluetooth Type
Color: Black
Weight: 9.5g
Size: 4.35*2*1.3cm
Warranty:1 Year
Certification: CE
Battery: Lithium battery, its capacity is 70mAh
Specifications:
Model:A-155 BTE hearing aid
Max Sound Output: ≥127dB ± 4dB
Max Sound Gain: 48dB ± 5dBTotal Harmonic Distortion: ≤5%
Frequency Range: 450~3500 hz
Equiv Input Noise: ≤30 dB
Battery: Lithium Battery
Working Voltage DC 3.7V
Working Current: ≤4mA
Measurement: 4.35*2*1.3cm
Special Function Key:Rechargeable,Adjustable Ear Hook
Detailed Description:
Rechargeable, work for about 20hours after fully charged
Bluetooth type, invisible, nobody knows it's a hearing aid
Built in 70mAh lithium battery, it can work for about 20hours continuously after fully charged.
On/Off Switch
Volume Control
Different size noise prevention earplug
Good sound quality, 30 meters away
Use the most splendid lithium battery power supply, provides the battery charger, rechargeable for 1000 times
Strict quality control, test by the hearing aid test machine of Fonix 6500-C,Fonix 7000 and CR6128

Package Content:
1 x Hearing Aid
1 x Carrying case
1 x Charger (110-240v.)
3 x Earplugs
1 x User Instructional Brochure

戴助听器常遇到的问题

1.如何佩戴助听器?  

初次使用助听器您也许会觉得声音不够真实清晰。因为您已经习惯了原来的听力状况,当使用助听器后,听到的是些不熟悉的声音,因此一时不能适应。解决问题的主要方法是进行必要的适应性训练,刚开始佩带的时间不要太长,音量不要过大,慢慢适应。

2.如何进行适应性训练? 
助听器适应性训练并不复杂,总的原则是坚持戴用、分步适应：

    (1)从每日戴用时间上讲,宜从短到长;

    (2)从音量调节上看,宜先小后大;

    (3)从交际环境说,宜先安静后曹杂、先简单后复杂。

    如此循序渐进,才能使您尽快渡过适应期,使助听器的作用最大限度地发挥出来。

3.戴用助听器为何会产生啸叫?

耳塞与耳道接触部位封闭不严,放大的声音从缝隙中泄露出来又返回到麦克风再次被放大.就会产生啸叫。这种现象类似于我们常见的麦克风靠近音响时出现啸叫声那样。

       (1)手或某个物件靠近助听器，因为部分声音反射在手掌或物件上又传回麦克风进一步放大所致。

       (2)助听器没有完全塞入耳道或与耳道壁密封不紧，放大后的声音泄露并传回麦克风所致。

       (3)耳内有大量的耳屎，发生耳屎栓塞，放大后的声音反射到耳屎上再次传给麦克风，也将产生反馈。

4. 怎样避免啸叫?    

 (1)先将助听器音量调节旋钮调到“1”的位置，然后将耳塞塞入耳内并尽量塞紧，再将音量调到最清晰位置。

  (2)如果耳塞无法塞紧请换另一个比较合适的耳塞试试，塞紧耳朵,不要泄漏空气。