Coniler Hearing Amplifier for Adults and Seniors,Rechargeable Digital Hearing Aids Fit Both Ears with Dynamic Compression for Noise Reduction

Frequently QA and solutions Q:Why there are some background noise? A:Hearing amplifiers are electronic devices, which have a quiet but occasionally noticeable sound. Sometimes, it can be a distracting noise.Actually, it is the electric current sound existing in all good machines.Generally, the higher the power, the greater the static sound. S:Adjust to Noisy Mode when start wearing, then turn up the sound gradually. Generally, You will get used to it after 2-3 weeks. Q:What causes the feedback? A:If the ear dome is not inserted well into ear canal or air leaks at the ear dome edges, when the device is close to hand or wall, a certain amount of sound will go back into the microphone.The sound is re-amplified which causes that annoying whistle. S:Try and select suitable ear dome. Put the ear dome into the ear canal and make sure it fits snugly inside. Q:Why did the product stop using in a short time? A:1.Grese and water entering the device will cause hearing aid damage. 2. Charging the hearing aid for a long time can damage the battery. S:Often use soft cloth or cotton paper to wipe the grease or moisture off the hearing amplifier. Preventing water or other liquids from entering the hearing amplifier to avoid the circuit damage. Charging the device properly, charging time can't be too long, usually 2-4 hours. Please disconnect the charger when full . Product parameters: MAX.SSPL: ?130dB+3dB High Frequency Average (OSPL90): 120dB ± 4 dB Full-on acoustic gain (1600 Hz): 40dB ± 5 dB Frequency Response Range: 600Hz-3000 Hz Total Harmonic Distortion: ? 10% Equivalent Input Noise Level: ? 32 dB Rated current:?10mA