JH-339 USB Rechargeable BTE Hearing Aid / Hearing Amplifier

Specification of JH-339 USB Rechargeable BTE Hearing Aid Hearing Amplifier
Max Sound Output	128 ± 3dB	Noise EIN	<26dB
Sound Gain	95±3dB	Battery size	NI-MH rechargeable battery
Total Harmonic Wave Distortion	500Hz <= 3%	Working current	3.5mA
	800Hz <= 5%
	1600Hz <= 1%
Frequency Range	400-4200Hz	Working Time	16 hours
Dimension	40mm13mm10mm	Charging time	7 Hours
Certification	FDA	Weight	4.3g

Features of JH-339 USB Rechargeable BTE Hearing Aid Hearing Amplifier

1. Double hearing aids in one kit, can be rechargeable in one USB dock, 12-14 hours continuous use with a full charge, one time can charge two hearing amplifiers.
2. The power supply could be any with USB Interface, like the computer, laptop, tablet, power bank, adapter and so on.
3. On/Off switch
4. BTE types hearing aid amplifier, receiver outside the body, good sound quality, and noise reduction;
5. MAX Sound Output design, this function will protect your ear from the damage of sound suddenly over-amplify;
6. We offer Big, Middle, Small, Fat ear tips for accessory to fit for the different ear canal.

Precautions of JH-339 USB Rechargeable BTE Hearing Aid Hearing Amplifier

1. Charging time: It will take around 11 hours for a finished battery to be fully recharged. It's strongly suggested to charge for 12 hours for the first time charging.
2. During the charging period, the indicator light in the adapter base is showing Redlight
3. After charging completed, the indicator light will turn to Greenlight.
4. Important to off the machine before you put on it to your ear.
5. To choose the right size of earplugs will be more comfortable to the ear, and help a better sounds gain, and avoid any extra noise.
6.The switch should be turned to the off position when the apparatus is not in use. That will ensure longer battery life