1. Introduction
Thank you for choosing the Remax RB-750HB Wireless Gaming Headphones. This manual provides detailed instructions on how to set up, operate, and maintain your headphones to ensure optimal performance and longevity. Please read this manual carefully before using the product.
2. Product Overview
The Remax RB-750HB is a versatile wireless gaming headphone designed for an immersive audio experience. It features HIFI sound, a retractable headband for comfort, a hidden microphone for clear communication, and a TF card slot for direct music playback.

Image 1: Front view of the Remax RB-750HB Wireless Gaming Headphones in black. This image displays the overall design, including the earcups and adjustable headband.

Image 2: Side view of the headphone showing the 3.5mm audio input, USB-C charging port, and the TF (MicroSD) card slot. A TF card is shown inserted into the slot, and audio cables are connected to the 3.5mm port.

Image 3: Close-up of the control buttons located on the earcup. These buttons are numbered 1 through 4, indicating various functions such as power, volume, track control, and potentially mode switching.
3. Setup
3.1 Charging the Headphones
- Connect the provided USB-C charging cable to the charging port on the headphone (refer to Image 2).
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will illuminate during charging and change color or turn off when fully charged.
- A full charge typically takes approximately 2-3 hours.
3.2 Power On/Off
- Power On: Press and hold the Power button (Button 1 in Image 3) for approximately 3 seconds until the LED indicator lights up and you hear a power-on prompt.
- Power Off: Press and hold the Power button (Button 1 in Image 3) for approximately 3-5 seconds until the LED indicator turns off and you hear a power-off prompt.
3.3 Bluetooth Pairing
- Ensure the headphones are powered off.
- Press and hold the Power button (Button 1 in Image 3) for about 5-7 seconds until the LED indicator flashes red and blue alternately, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "REMAX RB-750HB" from the list of found devices.
- Once connected, the LED indicator will flash blue slowly, and you will hear a connection confirmation sound.
- If prompted for a password, enter "0000".
3.4 TF Card Mode
- Insert a TF (MicroSD) card with MP3 audio files into the TF card slot on the headphone (refer to Image 2).
- The headphones will automatically switch to TF card playback mode. If not, press the Mode button (if available, or cycle through modes using Button 1) to switch.
- Use the Volume Up/Next Track (Button 3) and Volume Down/Previous Track (Button 2) buttons to control playback.
3.5 Wired Mode (AUX)
- Connect one end of a 3.5mm audio cable (not included) to the AUX port on the headphone (refer to Image 2).
- Connect the other end of the cable to the 3.5mm audio output of your device.
- The headphones will automatically switch to wired mode. In this mode, the headphone's buttons may not function for media control, and control will be from your connected device.
4. Operating Instructions
4.1 Button Functions (Refer to Image 3)
- Button 1 (Power/Multi-function):
- Press and hold for 3 seconds: Power On/Off.
- Short press: Play/Pause music.
- Short press during incoming call: Answer/End call.
- Press and hold during incoming call: Reject call.
- Double press: Redial last number.
- Button 2 (Volume Down / Previous Track):
- Short press: Decrease volume.
- Press and hold: Play previous track.
- Button 3 (Volume Up / Next Track):
- Short press: Increase volume.
- Press and hold: Play next track.
- Button 4 (Additional Function): This button may serve as a mode switch (e.g., Bluetooth/TF Card/FM Radio if supported) or a dedicated gaming function. Refer to specific product packaging or quick start guide for exact functionality.
4.2 Making and Receiving Calls
- Answering a Call: When there is an incoming call, short press Button 1.
- Ending a Call: During a call, short press Button 1.
- Rejecting a Call: When there is an incoming call, press and hold Button 1 for 2 seconds.
- Redialing: Double press Button 1 to redial the last number called.
4.3 Music Playback
- Play/Pause: Short press Button 1.
- Next Track: Press and hold Button 3.
- Previous Track: Press and hold Button 2.
- Volume Adjustment: Short press Button 3 for volume up, short press Button 2 for volume down.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the headphones. Do not use abrasive cleaners or solvents.
- Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, charge the headphones regularly, even if not in frequent use. Avoid fully discharging the battery for extended periods.
- Avoid Water: These headphones are not waterproof. Avoid exposure to water or excessive moisture.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| Cannot pair via Bluetooth. | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are in pairing mode (flashing red/blue LED). Turn on Bluetooth on your device. Move headphones closer to the device (within 10 meters). |
| No sound. | Volume too low; incorrect input mode; device not connected. | Increase headphone and device volume. Check if headphones are in the correct mode (Bluetooth, TF Card, or AUX). Reconnect Bluetooth or check AUX cable connection. |
| Microphone not working. | Microphone muted on device; hidden microphone obstructed. | Check microphone settings on your connected device. Ensure the hidden microphone area is clear. |
7. Specifications

Image 4: Diagram illustrating the internal Bluetooth 5.0 chip and circuit board, highlighting the advanced wireless connectivity of the headphones.
| Feature | Detail |
|---|---|
| Model Number | RB-750HB |
| Brand Name | Remax |
| Connectivity Technology | Wireless (Bluetooth), Wired (3.5mm AUX) |
| Wireless Communication Technology | Bluetooth 5.0 |
| Headphones Form Factor | Over Ear |
| Noise Control | None |
| Microphone | Hidden Microphone |
| Additional Features | TF Card Slot |
| Material | Leather (earpads) |
| Product Dimensions | 10 x 10 x 10 cm; 250 g |
8. Warranty and Support
Remax products are designed for quality and reliability. For specific warranty information, please refer to the warranty card included with your purchase or visit the official Remax website. If you encounter any issues or require technical assistance, please contact Remax customer support through their official channels.





