Gray Self Fitting Hearing Aids 4 Channels Programmable Hearing Amplifiers

Q: Are you trading company or manufacturer ?
A: We are manufacturer. We are a company integrating production and R&D.

Q: How about your delivery time?
A: Generally, it will take 5 to 15 days after receiving your advance payment. The specific delivery time depends on the items and
the quantity of your order.

Q: How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional.

Q: How to deal with the faulty?
A: Our products are produced in strict quality control system and the defective rate will be less than 0.2%.

For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call
according to real situation.

Q: About the rechargeable hearing aid, Why do you used the NiMH battery, don't used the Lithium ion battery?
A: We have done a large number of market research, we learned that the lithium is not very stable and lithium battery is prone to
safety accidents. NiMH rechargeable battery will be more safe and Environmentally friendly. Besides, NiMH battery can support
longer duration of use about 25H. So that is why we choose the NiMH battery.

Q: About the Protable case, Does it have a power storage function?
A: Yes, it has, the protable case we used the lithium rechargeable way, it can provide power storage function, just like a power
bank.

Q: How long will it last when fully charged?
A: Usually more than 18 Hours.

Q: Can you provide OEM brand service?
A: OEM and ODM is available, usually our OEM moq is from 200pairs.

1. Prompt and professional reply to your inquiry.
2. Customized box, manual, printing are available for mass orders.
3. Customized program setting, fittable to personal use.
4. Personal information protected.
5. On time delivery, and 1 year warranty.

Technical Data	Echo 402R
Peak OSPL 90 ( dB SPL)	115
HAF OSPL 90 ( dB SPL)	110
Peak Gain(dB)	40
HAF Ful on Gain (dB)	35
Frequency Range (Hz)	200-5000
500Hz(%)	0.5
800Hz(%)	1
1600Hz (%)	2
EQ Input Noise (dB)	24
Battery	NiMH rechargeable