1. Introduction
Thank you for choosing the PROHEAR 033 AM FM Bluetooth 5.4 Radio Headphones. These headphones are designed to provide hearing protection with an SNR of 31 dB, while allowing you to enjoy AM/FM radio and Bluetooth audio. This manual will guide you through the proper use and care of your device.
Image: PROHEAR 033 headphones in use, showcasing key features like Bluetooth 5.4 and USB-C charging.
2. Safety Information
Always read and follow all safety instructions before using this product. Improper use can result in hearing damage or other injuries.
- Hearing Protection: These headphones provide 31dB SNR noise reduction. Ensure they are worn correctly to achieve the stated protection level.
- Battery Safety: Use only the provided charging cable and a compatible USB-C power source. Do not expose the battery to extreme temperatures or puncture it.
- Environmental Awareness: While providing hearing protection, be aware of your surroundings, especially in environments where warning signals or verbal communication are critical.
- Cleaning: Do not immerse the headphones in water. Clean with a damp cloth only.
Image: A banner highlighting the importance of hearing protection.
3. Package Contents
Verify that all items are present in your package:
- PROHEAR 033 AM FM Bluetooth Radio Headphones
- USB-C Charging Cable
- AUX Input Cable
- 2000mAh Rechargeable Lithium Battery (pre-installed)
- User Manual (this document)
- Storage Pouch (may vary by package)
Image: Contents of the PROHEAR 033 package, including headphones, cables, and battery.
4. Product Overview
Familiarize yourself with the components and controls of your PROHEAR 033 headphones.
Image: Detailed view of the PROHEAR 033 headphones, highlighting key features and components.
Controls:
- Power Button: Press and hold to power on/off.
- Mode Button (M): Switches between AM, FM, and Bluetooth modes.
- Tune/Track Buttons (< / >):
- In Radio Mode: Short press to tune frequency, long press to auto-scan.
- In Bluetooth Mode: Short press for previous/next track.
- Volume Knob: Rotates to adjust volume.
- USB-C Charging Port: For charging the internal battery.
- AUX Input Jack: For wired audio connection.
Image: Close-up of the control panel on the PROHEAR 033 headphones.
5. Setup
5.1 Charging the Headphones
Before first use, fully charge the headphones. The integrated 2000mAh lithium battery provides up to 58 hours of playtime in Bluetooth mode and up to 125 hours in AUX mode.
- Locate the USB-C charging port on the headphones.
- Connect the provided USB-C cable to the headphones and the other end to a compatible USB power source (e.g., computer USB port, wall adapter, car charger).
- The charging indicator light will illuminate during charging and turn off when fully charged. A full charge typically takes approximately 4 hours.
Image: USB-C charging port on the headphones.
5.2 Adjusting the Fit
For optimal noise reduction and comfort, ensure the headphones fit snugly over your ears.
- Extend the headband by pulling the earcups downwards until they fit comfortably over your ears.
- Ensure the ear cushions fully enclose your ears and create a seal against your head.
- The padded headband should rest comfortably on top of your head.
Image: Adjustable headband and soft ear pads for a comfortable fit.
6. Operating Instructions
6.1 Power On/Off
- To power on: Press and hold the Power button until the display illuminates.
- To power off: Press and hold the Power button until the display turns off.
6.2 Bluetooth Pairing
The headphones use Bluetooth 5.4 for stable wireless connection.
- Ensure the headphones are powered on.
- Press the Mode (M) button until "BT" or a Bluetooth icon appears on the display, indicating Bluetooth mode. The headphones will enter pairing mode automatically.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "PROHEAR 033" from the list of devices.
- Once paired, the headphones will confirm the connection.
Image: Internal view highlighting the Bluetooth 5.4 chip for wireless connection.
6.3 AM/FM Radio Operation
The built-in digital tuner allows you to listen to AM and FM radio stations.
- Press the Mode (M) button to switch to AM or FM radio mode. The display will show the current frequency.
- Manual Tuning: Short press the Tune (< / >) buttons to adjust the frequency step by step.
- Auto-Scan: Long press the Tune (< / >) buttons to automatically scan for the next available station.
- Preset Stations: The headphones can store up to 10 AM and 10 FM stations.
- To save a station: Tune to the desired station, then press and hold the Mode (M) button until the preset number flashes. Use the Tune (< / >) buttons to select a preset slot, then short press M to confirm.
- To recall a station: Short press the Mode (M) button to cycle through saved presets.
Image: Digital display showing AM radio frequency.
6.4 AUX Mode
Connect external audio devices using the provided AUX cable.
- Connect one end of the AUX cable to the AUX input jack on the headphones.
- Connect the other end to the audio output of your external device.
- The headphones will automatically switch to AUX mode.
6.5 Call Functions (Bluetooth Mode)
When connected via Bluetooth, you can manage calls directly from the headphones.
- Answer/End Call: Short press the Power button.
- Reject Call: Long press the Power button.
- Redial Last Number: Double-press the Power button.
6.6 Volume Control
Adjust the listening volume using the rotary volume knob located on the earcup.
Image: Rotary volume knob for audio adjustment.
7. Maintenance
7.1 Cleaning
- Wipe the headphones with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ensure no liquid enters the earcups or charging port.
7.2 Ear Cushion Replacement
The snap-in design allows for easy maintenance and replacement of ear cushions.
- Gently pull the old ear cushion away from the earcup to detach it.
- Align the new ear cushion with the earcup and press firmly around the edges until it snaps securely into place.
Image: Snap-in ear cushion design for easy replacement.
7.3 Storage
- Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Use the provided storage pouch to protect them from dust and scratches.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery is depleted. | Charge the headphones using the USB-C cable. |
| Cannot pair via Bluetooth | Bluetooth not enabled on device; headphones not in pairing mode; too far from device. | Ensure Bluetooth is on and visible on your device. Press 'M' to enter Bluetooth pairing mode. Move closer to your device. |
| Poor radio reception | Weak signal; interference. | Adjust your position. Extend the antenna fully. Try auto-scanning for stronger signals. |
| No sound in AUX mode | AUX cable not fully inserted; external device volume too low. | Ensure the AUX cable is securely connected at both ends. Increase volume on both the headphones and the external device. |
9. Specifications
| Feature | Detail |
|---|---|
| Noise Reduction Rating (NRR) | 31 dB |
| Single Number Rating (SNR) | 31 dB |
| Bluetooth Version | 5.4 |
| Battery Capacity | 2000 mAh Lithium Battery |
| Charging Port | USB-C |
| Playtime (Bluetooth Mode) | Up to 58 hours |
| Playtime (AUX Mode) | Up to 125 hours |
| Material | Durable ABS Shell & Ultra-soft Cushion |
| Fit Type | Over the Head |
10. Warranty and Support
PROHEAR products undergo strict quality control. For any questions or issues regarding your PROHEAR 033 headphones, please contact our customer support. We are committed to providing a satisfied solution and are available 24 hours a day.
Please refer to the contact information provided with your purchase or visit the official PROHEAR website for support details.