Introduction
Thank you for choosing the PROHEAR 033 Bluetooth Hearing Protection Headphones. This manual provides essential information for the safe and effective use of your device. These headphones are designed to protect your hearing while allowing you to enjoy AM/FM radio, Bluetooth audio, and hands-free calls. Please read this manual thoroughly before use and retain it for future reference.
Safety Information
Your PROHEAR 033 headphones are certified with an NRR (Noise Reduction Rating) of 25dB and an SNR (Single Number Rating) of 31dB, meeting ANSI S3.19 and CE EN352-8 standards. This means they effectively reduce harmful noise levels. For example, if the ambient noise is 80dB, the noise reaching your ears will be approximately 55dB.
- Always wear the headphones in noisy environments to protect your hearing.
- Ensure the ear cups form a tight seal around your ears for optimal noise reduction. Adjust the headband as needed.
- Do not modify the headphones, as this may compromise their protective capabilities.
- Keep the headphones away from extreme temperatures, moisture, and corrosive substances.

Image: PROHEAR 033 headphones are designed to block harmful noise in environments such as gardening, factories, and workshops, featuring NRR 25dB noise reduction and CE certification.
Package Contents
- PROHEAR 033 Bluetooth Hearing Protection Headphones
- USB-C Charging Cable
- AUX Audio Cable
- User Manual (this document)
- Rechargeable Lithium Battery (pre-installed)
Product Overview
Familiarize yourself with the components and controls of your PROHEAR 033 headphones.

Image: Detailed view of the PROHEAR 033 headphones, highlighting features such as the adjustable padded headband, easy-to-use control knob, soft foam ear pads, and the snap-in design for convenient ear pad maintenance and replacement. The NRR 25dB noise reduction is also indicated.
- Adjustable Padded Headband: Provides comfort and ensures a secure fit for various head sizes.
- Soft Foam Ear Pads: Designed for comfort and effective noise sealing.
- Easy-to-Use Knob: Controls power, volume, and mode selection.
- Snap-in Design Ear Pads: Allows for easy maintenance and replacement of ear cushions.
- LCD Display: Shows radio frequency, battery status, and mode.
- Antenna: For AM/FM radio reception.
- USB-C Charging Port: For recharging the internal battery.
- AUX Input Jack: For wired connection to external audio devices.

Image: The PROHEAR 033 headphones feature Bluetooth 5.4 for hand-free calling and music, AM/FM/AUX connectivity, Hi-Fi Sound, a wider Bluetooth range (up to 49ft), 2X connection speed, and a solid connection.
Charging
The PROHEAR 033 headphones are equipped with a 2000mAh rechargeable lithium battery, providing extended playtime.
- Locate the USB-C charging port on the headphones.
- Connect the provided USB-C cable to the charging port and the other end to a standard USB power adapter (not included) or a computer USB port.
- The LED indicator will show charging status (refer to the LED indicator section for details, if available on device).
- A full charge typically takes approximately 4 hours.
- Once fully charged, disconnect the cable.
Battery Life:
- Up to 58 hours in Bluetooth mode.
- Up to 125 hours in AUX mode.

Image: The PROHEAR 033 headphones feature a 2000mAh rechargeable battery, offering up to 58 hours of playtime in Bluetooth mode and up to 125 hours in AUX mode, with a charging time of approximately 4 hours via USB-C.
Setup
Initial Power On
- Press and hold the power button (often integrated with the main knob) for a few seconds until the LCD display illuminates.
- The headphones will typically start in the last used mode or default to FM radio.
Bluetooth Pairing
The PROHEAR 033 uses Bluetooth 5.4 technology for a stable connection.
- Ensure the headphones are powered on.
- Switch the headphones to Bluetooth mode. This is usually done by pressing the mode button or rotating the knob until 'BT' or a Bluetooth icon appears on the LCD.
- The headphones will enter pairing mode, indicated by a flashing Bluetooth icon or specific message on the display.
- On your mobile device, enable Bluetooth and search for available devices.
- Select "PROHEAR 033" from the list of devices.
- Once paired, the Bluetooth icon on the headphones' display will stop flashing and remain solid.

Image: The PROHEAR 033 headphones provide NRR 25dB and SNR 31dB hearing protection, while also enabling hands-free calling and music enjoyment through Bluetooth connectivity.
Operating Instructions
Power On/Off
- To Power On: Press and hold the power button/knob for approximately 3 seconds.
- To Power Off: Press and hold the power button/knob for approximately 3 seconds.
Volume Control
- Rotate the main knob clockwise to increase volume.
- Rotate the main knob counter-clockwise to decrease volume.
Bluetooth Mode (Music & Calls)
- After successful pairing, you can stream audio from your connected device.
- Play/Pause: Short press the multi-function button (often the same as the power button or a dedicated button).
- Next Track: Double press the multi-function button.
- Previous Track: Triple press the multi-function button.
- Answer/End Call: Short press the multi-function button during an incoming call.
- Reject Call: Press and hold the multi-function button during an incoming call.
- Redial Last Number: Double press the multi-function button when not on a call.
AM/FM Radio Mode
- Switch to AM or FM mode using the mode button.
- Automatic Station Search: Press and hold the 'Scan' button (or multi-function button in radio mode) to automatically search for and store up to 10 AM and 10 FM stations.
- Manual Tuning: Use the tuning buttons (or rotate the knob) to manually adjust the frequency.
- Recall Presets: Short press the 'Preset' button (or tuning buttons) to cycle through stored stations.
AUX Mode
- Connect one end of the provided AUX audio cable to the AUX input jack on the headphones.
- Connect the other end to the audio output jack of your external device (e.g., MP3 player, smartphone).
- The headphones will automatically switch to AUX mode or require manual selection via the mode button.
- Audio playback and volume will be controlled by your external device and the headphone's volume knob.
Maintenance
- Cleaning: Wipe the headphones with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Ear Pad Replacement: The snap-in design allows for easy replacement of ear cushions. Gently pull the old ear pads off and snap new ones into place. This ensures continued comfort and hygiene.
- Storage: Store the headphones in a clean, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery is depleted | Charge the headphones using the USB-C cable. |
| Cannot pair 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 the device (within 49ft). |
| No sound from radio | Poor reception; Incorrect mode; Volume too low | Extend the antenna. Try scanning for stations again. Ensure you are in AM/FM mode. Increase volume. |
| Sound distortion | Low battery; Interference; Volume too high | Charge the headphones. Move away from sources of interference. Adjust volume to a moderate level. |
| AUX mode not working | Cable not fully inserted; Incorrect mode; External device issue | Ensure AUX cable is fully inserted. Select AUX mode on headphones. Check external device's volume and playback. |
Specifications
| Feature | Detail |
|---|---|
| Model | PROHEAR 033 |
| Bluetooth Version | 5.4 |
| Noise Reduction Rating (NRR) | 25dB |
| Single Number Rating (SNR) | 31dB |
| Radio Bands | AM/FM Digital Radio |
| Radio Presets | 10 AM, 10 FM |
| Battery Capacity | 2000mAh Rechargeable Lithium Battery |
| Charging Port | USB-C |
| Charging Time | Approx. 4 hours |
| Bluetooth Playtime | Up to 58 hours |
| AUX Playtime | Up to 125 hours |
| Certifications | ANSI S3.19, CE EN352-8 |
Warranty and Support
PROHEAR products are built with quality materials and craftsmanship. Your PROHEAR 033 headphones come with a 1-year warranty from the date of purchase.

Image: The PROHEAR 033 headphones feature BT5.4, AM/FM Radio, and AUX connectivity, offering hands-free calls, stable connection, and storage for up to 10 AM/FM channels. The product is backed by a 1-year warranty and holds ANSI and CE certifications.
If you have any questions, require assistance, or need to claim warranty service, please contact PROHEAR customer support. Contact information can typically be found on the product packaging or the official PROHEAR website.






