1. Introduction
Thank you for choosing the PROHEAR 033 2.0 Bluetooth AM/FM Hearing Protection Headphones. This device is designed to provide effective hearing protection with a 31dB Signal-to-Noise Ratio (SNR), while also offering integrated Bluetooth 5.4 connectivity and AM/FM radio functionality. This manual provides detailed instructions for the proper use, setup, and maintenance of your headphones.

Image 1.1: PROHEAR 033 2.0 Bluetooth AM/FM Hearing Protection Headphones, showing the orange and black design with an antenna and control panel.
2. Product Overview
2.1 Key Features
- 31dB SNR Noise Reduction: Provides effective hearing protection in noisy environments.
- Bluetooth 5.4 Connectivity: Offers stable, long-range (up to 49 feet) wireless connection with quick 5-second pairing.
- AM/FM Radio: Clear reception for radio broadcasts, even in remote areas.
- Long-Lasting Rechargeable Battery: 2000mAh battery provides up to 50 hours of operation on a single 6-hour charge, with over 300 recharge cycles.
- Enhanced Audio Quality: Designed for clear sound reproduction for both music and calls.
- Comfort-Driven Design: Features an adjustable headband, breathable mesh lining, ultra-soft ear cushions, and Pressure Diffusion Technology for extended wear comfort.
- Durable Construction: Made with solid ABS plastic for ruggedness and durability.
2.2 Components
The PROHEAR 033 2.0 headphones include the following:
- PROHEAR 033 2.0 Hearing Protection Headphones
- 3.5 mm Audio Cable
- Carrying Bag
- USB Charging Cable
- Owner's Manual (this document)

Image 2.1: Close-up of the headphone's control panel and LCD display, showing buttons for power, mode, and tuning.
3. Setup
3.1 Charging the Battery
Before initial use, fully charge the headphones. The integrated 2000mAh Lithium-Ion battery provides approximately 50 hours of operation on a full charge.
- Locate the USB charging port on the headphones.
- Connect the provided USB charging cable to the headphones and to a compatible USB power source (e.g., computer, wall adapter).
- The charging indicator light will illuminate. A full charge typically takes about 6 hours.
- Once fully charged, the indicator light may change color or turn off, depending on the model. Disconnect the charging cable.
The battery is designed for over 300 recharge cycles, offering a total usage time of approximately 5010 hours.

Image 3.1: Diagram illustrating the 2000mAh rechargeable battery, 6-hour charging time, 50 hours of enjoyment, and over 300 recharge cycles.
3.2 Powering On/Off
- To power on, press and hold the Power button until the LCD display illuminates.
- To power off, press and hold the Power button again until the display turns off.
3.3 Adjusting the Headband
The headband is adjustable to ensure a comfortable and secure fit. Extend or retract the ear cups from the headband until they comfortably cover your ears, creating a good seal for optimal noise reduction.
4. Operating Instructions
4.1 Bluetooth Mode
The headphones feature Bluetooth 5.4 for wireless audio streaming and calls.
- Pairing: With the headphones powered on, press the Mode button until "BT" or a Bluetooth icon appears on the LCD display. The headphones will enter pairing mode, indicated by a flashing light or icon. On your device (smartphone, tablet, etc.), enable Bluetooth and select "PROHEAR 033" from the list of available devices. Pairing typically takes about 5 seconds.
- Audio Playback: Once paired, audio from your device will stream to the headphones. Use your device's controls or the headphone's volume buttons to adjust playback.
- Call Functions: When a call comes in, press the Multi-function button (often the Power/Play/Pause button) to answer. Press again to end the call.

Image 4.1: Visual representation of Bluetooth 5.4 features, including rapid response, unshakable stability, and extended range for calls (33ft) and music (49ft).
4.2 AM/FM Radio
The headphones include an integrated AM/FM radio with strong reception.
- Switching to Radio Mode: Press the Mode button until "AM" or "FM" appears on the LCD display.
- Tuning: Use the tuning buttons (often labeled with arrows) to scan for stations. Short press for incremental tuning, long press for automatic scanning to the next strong station.
- Saving Presets: Refer to the specific button layout on your device for saving favorite stations. Typically, a 'Memory' or 'Preset' button is used in conjunction with tuning buttons.

Image 4.2: Graphic depicting strong AM/FM radio reception, indicating the ability to receive signals without static or interference across various frequencies.
4.3 Volume Control
Use the dedicated volume buttons (usually '+' and '-') on the headphones to adjust the audio level for both Bluetooth and radio modes.
5. Maintenance
5.1 Cleaning
To maintain hygiene and performance, regularly clean your headphones:
- Wipe the exterior surfaces with a soft, damp cloth.
- Do not use abrasive cleaners or immerse the headphones in water.
- Ensure the charging port is free of dust and debris.
5.2 Ear Cushion Replacement
The PROHEAR 033 2.0 features a "snap-in design" for easy ear pad maintenance and replacement. Over time, ear cushions may wear out and affect comfort or noise reduction. Replacement ear pads are available.
- Gently pull the old ear cushion away from the ear cup until it detaches.
- Align the new ear cushion with the ear cup and press firmly around the edges until it snaps securely into place.

Image 5.1: Detailed view of an ear cushion with dimensions, highlighting the ample earpad space and super soft material for comfort.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| Cannot connect via Bluetooth. | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are in Bluetooth pairing mode. Turn on Bluetooth on your device. Move closer to your device (within 49 feet). |
| Poor AM/FM radio reception. | Weak signal area; antenna position. | Adjust the antenna position. Move to an area with better signal reception. |
| No sound or low volume. | Volume too low; incorrect mode selected. | Increase volume on both headphones and connected device. Ensure correct mode (Bluetooth or Radio) is selected. |
7. Specifications
- Model: PROHEAR 033
- Part Number: PROHEAR 033 2.0
- Noise Reduction Rating (SNR): 31dB
- Bluetooth Version: 5.4
- Bluetooth Range: Up to 49 feet (music), 33 feet (calls)
- Battery: 1 Lithium Ion (2000mAh)
- Battery Life: Up to 50 hours
- Charging Time: Approximately 6 hours
- Item Weight: 1.26 pounds
- Product Dimensions: 8 x 3.7 x 6 inches
- Material: Durable and sturdy ABS plastic, Ultra-soft cushions
- Special Features: Built-In AM FM Antenna, Built-In Bluetooth 5.4 Technology, Lightweight, Passive Noise Reduction, Rechargeable, LCD Display
- Included Components: 3.5 mm Audio Cable, Carrying Bag, Hearing Protector with 2000mAh Rechargeable Lithium Battery, Owner's Manual, USB Charging Cable
8. Warranty and Support
8.1 Warranty Information
The PROHEAR 033 2.0 headphones come with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects and ensures the product meets its specified performance standards under normal use. Please retain your proof of purchase for warranty claims.
8.2 Customer Support
For any questions, issues, or support needs, please contact PROHEAR customer service. You can reach us via Amazon or by emailing support@proheartac.com. Our support team is available to provide assistance.





