JH-338 Monaural OTC BTE Analog Hearing Aids Rechargeable

Jinghao Medical presents the JH-338 monaural BTE hearing amplifier – a rechargeable, single-unit 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, knob volume control, a portable USB round charging dock, and skin-color design. 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 monaural BTE hearing aids for global distributors.

---

Engineered for Simplicity, Comfort, and Daily Reliability

The JH-338 is engineered with a lightweight and compact body, measuring just 36mm × 8mm × 15mm. Combined with a soft curved ear wire and skin-color finish, it sits naturally behind the ear and is barely visible. Six core advantages define this model:

• Lightweight and Compact – Comfortable for extended wear
• Imported Chips – Stable analog amplification performance
• Portable Charging – USB round charging dock for travel
• Easy to Use – One-key switch and knob volume control
• The Sound Quality is Clear – Pure and audible output
• Comfortable Earbuds – Soft silicone tips in 3 sizes

01 Pure Sound Quality – Clear and Audible

The JH-338 uses an imported chip with professional audio decoding technology, delivering clear high frequency and soft bass. The signal travels through the sound guide tube directly to the ear tip, presenting the original sound without damaging the eardrum. This design ensures comfortable listening even during long conversations.

 

02 Suitable for Different Occasions – One Machine, Multiple Scenarios

According to the high and low frequency output of sound in different occasions, one machine can be used in multiple environments – with clear high frequencies and soft bass, clear and audible. Whether users are at home with family, walking outdoors, chatting at the market, or enjoying time with friends, the JH-338 adapts naturally to daily life.

03 Less Is More – One-Button Switch and Knob Volume Control

Say goodbye to complicated operations. The JH-338 separates switch and volume into two simple controls:

• Knob Adjustment – Numbered dial for precise volume tuning
• One-Touch ON/OFF Switch – Clear OFF/ON slider, easy to confirm status

One round of volume adjustmen

04 Comfortable for Long-Time Wear – Soft Silicone Ear Tips

The lightweight design, soft silicone ear tips, and behind-the-ear wearing effect allow the ears to enjoy a delicate texture while being worn for extended periods. The package includes 3 sizes of soft silicone ear tips (L / M / S) to fit different ear canal sizes, reduce ambient noise, and prevent howling (feedback).

 

05 Portable Charging – Essential for Travel

The JH-338 is directly charged by a USB charging cradle, which is convenient for charging on the go. The round charging dock can be connected to a laptop, power bank, or wall adapter via USB – making it a must-have for travel. The LED indicator shows charging status at a glance.

12 Hours Working Time – Say Goodbye to Battery Replacement

With a built-in rechargeable battery, the JH-338 can be used for 12 hours at a time on a single full charge – saying goodbye to the trouble of replacing the battery. This makes it a cost-effective and environmentally friendly choice for daily use.

Easy to Use in Just Four Steps

1. Plug in the charging dock – Charge when in use via USB plug connected to power supply.
2. Choose the right size earbuds – Reduce ambient noise and howling by selecting the correct ear tip size.
3. Adjust the earhook and wear it – Adjust the earhook to the correct angle, put on the hearing aid, and make adjustments.
4. Turn on the power and adjust volume – Slide the switch to ON and adjust the appropriate volume with the knob.

Please read the instructions carefully before use.

 

---

 

Product Parameters and Dimensions

Product Model	JH-338
Product Name	Behind-the-Ear Hearing Aid
Dimensions	36mm (H) × 8mm (W) × 15mm (D)
Scope of Application	For patients with air-conductive hearing loss, to compensate for hearing
Eligibility	Suitable for people over 6 years of age who have moderate/mild hearing loss or less in air conductivity

Technical Specifications – JH-338 Monaural BTE Hearing Amplifier

Parameter	Specification
Model	JH-338
Type	BTE (Behind-the-Ear) Analog Sound Amplifier, OTC
Configuration	Monaural – 1 device + 1 round charging dock
Signal Processing	Analog (no digital chip)
Battery Type	Built-in Rechargeable Li-ion
Working Time	Up to 12 hours per charge
Charging Method	USB round charging dock
Volume Control	Knob adjustment with numbered dial
ON/OFF Switch	One-touch sliding switch (OFF / ON)
Ear Coupling	Soft silicone ear tips, 3 sizes (L / M / S) included
Dimensions	36mm × 8mm × 15mm
Certifications	FDA Registered, CE MDR, ISO 13485
MOQ	1,000 pcs

 

---

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.