JH-338 Binaural BTE Hearing Amplifier OTC Rechargeable

Jinghao Medical presents the JH-338 binaural BTE hearing amplifier – a rechargeable, dual-device sound amplifier designed for distributors and wholesale partners seeking reliable BTE hearing amplifiers at competitive factory-direct pricing. As one of China’s leading analog hearing aid manufacturers and hearing aid wholesale suppliers, we deliver FDA-registered and CE MDR certified products with proven performance. This behind the ear hearing amplifier features a one-key switch, infinitely adjustable volume control, a USB charging dock, and skin-color design. Sold as a pair (binaural), the JH-338 is ideal for seniors with mild to moderate hearing loss who need an easy-to-use, comfortable, and affordable solution. Perfect for bulk procurement, it is one of the most practical binaural BTE hearing aids for global distributors.

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Engineered for Simplicity, Comfort, and Daily Reliability

One Key Switch – Clear ON/OFF Control for Seniors

The JH-338 features a clear one-key ON/OFF switch that allows seniors to easily check the hearing aid status at a glance. The green indicator confirms when the device is on, ensuring confident and effective daily management without confusion.

 

Rechargeable Sound Assist Amplifier – LED Charging Indicator

The JH-338 comes with a dedicated USB charging dock. The LED light turns red when charging and green when fully charged, making battery status easy to monitor. With a charging time of approximately 2.5 hours, users can enjoy up to 15 hours of continuous working time per charge.

 

Volume Control – Infinite Adjustment for Personalized Hearing

The infinitely adjustable volume wheel allows continuous, smooth volume adjustments based on the user’s hearing condition. Simply slide upward to increase the volume and downward to decrease. This intuitive design makes the JH-338 one of the most user-friendly behind the ear hearing amplifiers for elderly users.

 

Main Function Overview – Thoughtful Component Design

• Ear Hook: Prevents dropping, ensures a stable fit behind the ear
• Sound Guide Tube: Soft and comfortable, delivers clear sound
• Receiver: Converts amplified sound for the ear
• Volume Keys: Increasing upward, decreasing downward
• Switching Key: ON/OFF control
• Headphones: Skin color and invisible, discreet appearance
• Earplugs: 3 different sizes for choose (S/M/L included)

 

USB Directly Charger – Charge Whenever and Wherever

The JH-338 comes with a dedicated USB charging dock. The LED light turns red when charging and green when fully charged, making battery status easy to monitor. With a charging time of approximately 2.5 hours, users can enjoy up to 15 hours of continuous working time per charge.

 

Can Be Worn on One Ear or Both Ears – Flexible Binaural Design

The JH-338 is designed with no distinction between left and right ear, giving users complete flexibility:

• Two Devices Simultaneously: Wear both amplifiers for binaural hearing – up to 18 hours + 18 hours of combined runtime
• One Device Alternately: Wear a single amplifier and switch ears as needed – up to 18 hours per device

Soft Curved Ear Wire – Fits Different Ear Shapes

The soft curved ear wire can be adjusted to fit different ear shapes, ensuring a comfortable and secure fit for extended wear. The modern, minimalist body shape sits naturally behind the ear and the skin-color design makes it virtually invisible.

 

Noise Reduction – High Definition Sound Quality

The JH-338 delivers high definition sound quality with no jamming and no delay, restoring the real sound for the user. The design includes double noise reduction and a comfortable listening experience.

• High-quality Digital Chip – Stable performance
• Comfortable Listening – Optimized for extended wear
• Double Noise Reduction – Reduces background interference
• After-sales Service – Full B2B support

 

What’s in the Box – Complete Binaural Package

• 2 × Hearing amplifiers
• 1 × Storage box
• 8 × Ear domes (multiple sizes)
• 1 × Cleaning tool
• 1 × Charging cable
• 1 × User manual

Custom packaging and multi-language manuals are available for OEM/ODM orders.

 

Best Gift for Parents and Families

With its easy operation, comfortable fit, and thoughtful design, the JH-338 makes an ideal gift for parents and elderly family members. Its simple one-key switch and rechargeable design remove the barriers that often prevent seniors from using hearing amplifiers consistently.

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Technical Specifications – JH-338 Binaural BTE Hearing Amplifier

Parameter	Specification
Model	JH-338
Type	BTE (Behind-the-Ear) Analog Sound Amplifier, OTC
Configuration	Binaural – 2 devices + 1 charging dock
Signal Processing	Analog (no digital chip)
Max OSPL90	≤ 128 dB + 3 dB
FOG50 Max Gain	≤ 50 dB + 3 dB
EQ Input Noise	≤ 29 dB + 3 dB
Frequency Range	500 Hz ~ 3200 Hz
Total Harmonic Distortion	≤ 7% + 3%
Battery Current	≤ 5 mA
Battery Type	Rechargeable Li-ion
Charging Time	Approximately 2.5 hours
Working Time	Up to 15 hours per charge
Charging Method	USB charging dock
Volume Control	Infinitely adjustable – up to increase, down to decrease
ON/OFF Switch	One-key sliding switch with green indicator
Ear Coupling	Ear domes (multiple sizes included)
Certifications	FDA Registered, CE MDR, ISO 13485
MOQ	1,000 pcs

 

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Regulatory Trust – FDA Registered & CE MDR Certified

Jinghao Medical is a leading analog hearing aid manufacturer and hearing aid wholesale supplier with full regulatory compliance. The JH-338 is manufactured in an FDA-registered establishment and meets the requirements of the European Medical Device Regulation (EU 2017/745) and ISO 13485.

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