JINGHAO 1Pair Rechargeable Digital Mini Hearing Aids Enhancer Voice AmplifierColor: BlackFrequency Range: 400-4000HzMax OSPL90:<=120dB ± 3dBAverage OSPL90: <=103dB ± 4dBTotal Harmonic Wave Distortion: <=7%Reference Test Gain: 23dB ±5dBEQ Input Noise: 29dB ±3dBBattery: Built-in Lithium Battery Features:1.It looks like a bluetooth headset, which makes you feel more confident, you don’t have to worry about discrimination anymore.2.A Mini design Hearing aid for portability, invisible and convenient to carry. It makes you feel more comfortable.3.USB rechargable, durable and reliable for long time(180 days) use.4.It can greatly reduce noise, provide good sound quality. And help you hear the sound clearly and loudly, whether you are indoors or outdoors5.The weight is less than 10 gram, SUPER light weight.6.It just needs 1.5-2 hours to be fully charged,but it can be used for 10-16 hours in a quiet environment. Only 10 minutes of charging will have a 1.5 hours standby time.7.Shockproof/Dropproof/user-friendly design,making it for a long time use8.We have three different size of hearing aid earplug to choose from ,It will better fit your earhole and won’t feel bloated and painful after you have wore it for a long time. Specifications:- Maximum OSPL90: ≦120±4dB- High frequency average OSPL90: 103dB±4dB- Total Harmonic Wave Distortion: ≤7%- Frequency range: 400-4000Hz- Input noise: ≦ 29DB±3- Equivalent input noise level: ≦ 35dB- Total harmonic distortion:≦10%- Frequency response range:300Hz-3500Hz- Rated power supply current consumption:≦60mA- Work time : 10-12hours- Charging time:90min-2hours- Charging case working current:≦70mA- Charging case working voltage:3.7V- charging case charging time:90 min- Hearing aid charging current:≦30mA- Hearing aid charging voltage:4.2V- Hearing aid charging times(Double machine):3-4 times Package Included:2 x Hearing aid1 x Case1 x User Manual

Convenient Volume Control:The hearing aids are equipped with a rotary button, allowing for easy volume adjustment. Unlike touch buttons commonly found in the market, this knob-type button eliminates the risk of accidental touches during daily activities, such as touching your hair. It provides a hassle-free experience for users. Effective Hearing Aids:Suitable for mild to moderate hearing loss. Comes with excellent noise reduction processing to improve sound quality, so that you don’t miss any beat in your life. JAIYINIDS Hearing Aids will bring you back to the world of clarity. Invisible and Lightweight :This hearing aids small in size and light in weight. It can be better hidden in your ears without affecting the wearing of glasses, and is almost invisible. The soft earplugs fit the ear canal better, which make you feel comfortable Long-lasting use:Our hearing aids come with rechargeable batteries. With a 3 hours charge, you can use your hearing aids for up to 20 hours of continuous use. The Charging Case with 80 hours of storage allows you to recharge your hearing aids up to 4 times. Say goodbye to the hassle of changing batteries and enjoy clear hearing all day long. Packing Lists Hearing Aids*2, Charging Box*1 Charging Cable*1 Earplugs*6 Cleaning Brush*2 Manual*1 Why do my hearing aids whistle ? Normally, Wearing our hearing aid in error result in the disturbing whistling or squeaking noise coming from device is caused by called feedback. We recommend that few simple steps as followed to reduce or eliminate noise: The first, Please choose the appropriate ear domes according to the size of the ear canal and Make sure the “ear domes” fit snugly in your ear . If your hearing aid’s ear domes does not fit in your ear properly, sound will leak out and back into the device’s microphone, causing the whistle sound. The Second, Please clean your device with our brush every time . Our ears produce wax naturally to trap and expel foreign substances, but when you have wax build-up in your ears and insert your hearing aids on top of the wax, the sound coming out of the amplifier will be blocked and returned to the microphone, causing a squeal. The Third, Adjust Volume Settings, Avoid setting the volume too high. High volume settings can sometimes cause echoes, try reducing the volume gradually. The Last , Please store your device in clean Case, If the hearing aid’s microphone is covered with wax or debris, it will make a noise. What to do if your hearing aids don’t charge properly? 1. Check the hearing aids is correctly putted into the charging case. 2.Make sure the charging case has enough power