1. Introduction
Welcome to the user manual for your new Jinghao A39 Rechargeable Hearing Amplifier. This device is designed to provide clear sound amplification, enhancing your listening experience in various environments. Please read this manual thoroughly before using the device to ensure proper operation and maintenance.
What's in the Box
Your Jinghao A39 package includes the following components:
Image: The complete package contents for the Jinghao A39 hearing amplifier. It shows the charging box, two main hearing devices, a USB charging cable, multiple sizes of ear domes, the user manual, and a small cleaning brush tool.
- Charging Box: Portable case for charging and storing your hearing aids.
- Main Devices: Two Jinghao A39 hearing amplifiers (left and right).
- Charging Cable: USB cable for recharging the charging box.
- Ear Domes: Multiple sizes (S, M, L) to ensure a comfortable and secure fit.
- User Manual: This instruction guide.
- Brush Tool: For cleaning the hearing aids.
2. Safety Information
Please observe the following safety precautions to prevent damage to the device or personal injury:
- Do not expose the device to extreme temperatures, humidity, or direct sunlight.
- Keep the device out of reach of children and pets.
- Do not attempt to disassemble or repair the device yourself. Contact customer support if issues arise.
- Avoid dropping the device or subjecting it to strong impacts.
- Clean the device regularly as instructed to prevent wax buildup, which can affect performance and hygiene.
- If you experience discomfort or pain while using the device, discontinue use and consult a medical professional.
3. Device Components
Familiarize yourself with the different parts of your Jinghao A39 hearing amplifier:
Image: A detailed view of the Jinghao A39 hearing aid, highlighting its key components: the earplug, the charging interface, the combined power switch and mode button, and the microphone.
- Earplug (Ear Dome): The soft silicone tip that fits into your ear canal.
- Charging Interface: Contacts on the device that connect with the charging box.
- Power Switch / Mode Button: A multi-function button for turning the device on/off and changing listening modes.
- Microphone: Captures sound from your environment.
Image: The Jinghao A39 hearing aids placed within their open charging case. The image clearly shows the charging contacts for each earbud and the blue LED indicator lights on the front of the case, indicating charging status.
The portable charging case is designed for convenience, allowing you to charge your hearing aids on the go. It is compact and easily fits into a pocket or bag.
Image: This image illustrates the portability of the Jinghao A39 charging case, showing it being placed into a pocket. Dimensions of the case are provided as 2.3 inches in length and 1.1 inches in width. The weight of a single hearing aid is also noted as 3.8 grams, emphasizing its lightweight design.
4. Setup and First Use
4.1 Charging the Device
Before first use, ensure your Jinghao A39 hearing amplifiers and their charging case are fully charged.
- Place the hearing aids into the charging case. Ensure they are correctly seated, and the indicator lights on the case illuminate.
- Connect the charging case to a power source using the provided USB cable.
- A single device requires approximately 1.5 hours for a full charge. Charging both devices simultaneously takes about 2 hours.
- The charging case itself holds a charge, allowing you to recharge the hearing aids multiple times on the go.
Image: The Jinghao A39 charging case with the hearing aids inside, connected via a USB cable. Blue indicator lights on the case signify that the devices are currently charging. A full charge is indicated when these lights turn solid or off, depending on the model's specific behavior.
4.2 Choosing and Attaching Ear Domes
Selecting the correct ear dome size is crucial for comfort, sound quality, and to prevent feedback (howling).
Image: A selection of ear domes in small (S), medium (M), and large (L) sizes, designed to fit the Jinghao A39 hearing aids. These domes are crucial for ensuring a comfortable and effective seal within the ear canal.
- Experiment with the provided S, M, and L ear domes to find the size that fits snugly and comfortably in your ear canal.
- Gently attach the chosen ear dome to the hearing amplifier. Ensure it is securely fastened.
- A proper fit will minimize sound leakage and prevent whistling or howling.
5. Operating Instructions
5.1 Power On/Off
- To turn the device ON: Press and hold the power/mode button for approximately 3 seconds until you hear an indication sound. It is recommended to turn the device on after placing it in your ear.
- To turn the device OFF: Press and hold the power/mode button for approximately 3 seconds until you hear an indication sound. Alternatively, placing the device back into the charging case will automatically turn it off and begin charging.
Image: This diagram visually explains how to operate the Jinghao A39 hearing aid using touch gestures, specifically showing the difference between a short "Tap" and a "Long Tap" for various functions.
5.2 Volume Adjustment
The Jinghao A39 features 6 levels of volume amplification. To adjust the volume:
- While the device is on, short press the power/mode button to cycle through the volume levels.
- Start with the lowest volume setting and gradually increase it until you find a comfortable listening level.
Image: A comprehensive guide on using the Jinghao A39, demonstrating the correct way to insert the hearing aid and how to adjust its volume. It also includes a table detailing 6 different volume levels, from Normal (0-25db) to Very Severe (91-120db), indicating their respective decibel amplification ranges.
5.3 Listening Modes
The A39 is designed to adapt to various listening environments. While specific mode names are not provided, the device is suitable for:
- Conversation: Optimized for clear speech understanding in social settings.
- Watching TV: Enhances audio from television for an improved viewing experience.
- Outdoor Sport: Provides amplification suitable for active outdoor environments.
Image: This visual demonstrates the versatility of the Jinghao A39 hearing aid, depicting its use in three common scenarios: engaging in conversation, watching television, and participating in outdoor sports, highlighting its adaptability to various listening needs.
Video: A short demonstration of the Jinghao A39 hearing aid being used in a conversational setting, showcasing its ability to enhance speech clarity. This video is a brief preview from the seller.
6. Maintenance and Care
Regular cleaning and proper care will extend the lifespan and ensure optimal performance of your hearing aids.
6.1 Cleaning Your Device
It is essential to clean your hearing aids regularly to prevent the buildup of earwax and debris, which can block sound and cause issues.
Image: This image provides instructions for maintaining the Jinghao A39 hearing aid, specifically focusing on how to clean it using the provided brush tool to remove debris from the ear dome and device opening.
- Use the provided brush tool to gently clean any earwax or debris from the ear dome and the sound outlet.
- Wipe the main body of the hearing aid with a soft, dry cloth. Do not use water or cleaning solutions directly on the device.
- Ensure the charging contacts on both the hearing aids and the charging case are clean and dry.
- Store the hearing aids in their charging case when not in use to protect them from dust and damage.
7. Troubleshooting
If you encounter issues with your Jinghao A39, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound or Weak Sound |
|
|
| Whistling or Howling Sound (Feedback) |
|
|
| Device Not Charging |
|
|
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | A39 |
| Brand | JingHao |
| Product Dimensions (each device) | 0.7"L x 0.47"W |
| Item Weight (each device) | 3.8 Grams |
| Power Source | Battery Powered (Rechargeable Lithium Ion) |
| Charging Time (single device) | Approx. 1.5 hours |
| Charging Time (double device) | Approx. 2 hours |
| Working Time (noisy environment) | Up to 10 hours |
| Working Time (quiet environment) | Up to 16 hours |
| Standby Time | Up to 180 days |
| Volume Levels | 6 levels (0-120db amplification range) |
9. Warranty and Support
For information regarding warranty coverage, returns, or technical support, please contact the seller or manufacturer directly. Refer to your purchase documentation for specific contact details.
You can also visit the official JingHao brand page for more information: JingHao Official Store
