Product OverviewJinghao JH-338 is a rechargeable behind-the-ear (BTE) hearing aid engineered as a digital speech-frequency amplifier with background noise reduction and cancellation. Compact, lightweight and discreet, it is ready to use out of the box with a simple on/off switch, one-touch volume control and mode selection for daily clinical or consumer use.
Key features- USB-rechargeable hearing aid providing approximately 12–14 hours of continuous use on a full charge (environmental and energy-saving).
- USB interface charging base compatible with computer, laptop, tablet, power bank, adapter, etc., for convenient charging.
- One device per charging base; simple on/off switch for straightforward operation.
- BTE design with receiver outside the body to improve sound quality and reduce occlusion.
- MAX sound output design to limit sudden over-amplification and protect the ear.
- Multiple ear tip sizes supplied to ensure proper fit and acoustic seal.
Additional product details and functionsThe product uses lithium-ion battery technology in a rechargeable design for faster charging and extended lifecycle (claimed >1,500 full-effect charges). The charging case integrates charging, drying and cleaning functions. A storage energy block provides additional energy for travel with up to 7 days extra power. The mini charger is lightweight (about 10 g) and easy to carry. Titanium alloy charging contacts ensure faster, stable and corrosion-resistant charging.
Precautions- Charging time: around 11 hours for a fully discharged battery; it is strongly suggested to charge 12 hours for the first time.
- During charging, the indicator light on the adapter base shows red; after charging completes the indicator turns green.
- Switch the hearing aid off before inserting it into the ear.
- Choose the correct ear plug size for comfort, better sound gain and reduced extra noise.
- Turn the switch off when not in use to ensure longer battery life.
Package Included- 1 Hearing Aid
- 3 Ear tips
- 1 USB Dock (charging base)
- 1 Strongbox
- 1 Manual book
- 2 Cleaning tools
Technical specifications- Color: Beige, OEM
- Max Sound Output: 128 ± 3 dB
- Sound Gain: 95 ± 3 dB
- Frequency Range: 400–4200 Hz
- Total harmonic distortion: 500 Hz ≤ 3%; 800 Hz ≤ 5%; 1600 Hz ≤ 1%
- Operation Current: ≤4 mA
- Voltage: 1.2 V
- Noise (EIN): <26 dB
- Battery type: NI-MH rechargeable battery
- Working time: 16 hours
- Charging time: 7 Hours
- Certification: FDA
- Machine size: 40 × 13 × 10 mm
- Weight: 4.3 g