Introduction
The HXSJ T66 is a high-performance rechargeable 2.4G wireless gaming mouse designed for an enhanced gaming experience on both notebooks and desktop PCs. Featuring vibrant RGB lighting, a lightweight honeycomb design, and precise optical tracking, this mouse combines style, comfort, and functionality. This manual provides detailed instructions for setting up, operating, and maintaining your T66 mouse.
Features
- Rechargeable Design: Built-in 750mAh rechargeable battery eliminates the need for constant battery replacement.
- 2.4G Wireless Connection: Provides a stable and fast wireless connection with a range of up to 10 meters using a mini USB receiver.
- Dynamic RGB Lighting: Features a hollow and colorful luminous logo and a light strip with multiple RGB marquee effects and up to 7 lighting patterns (Breathing, Tail, Neon, Response, Wave, Steady, Colorful Streaming). Lighting can be turned off.
- Honeycomb Shell Design: Aesthetic and functional cellular hollow design reduces mouse weight to approximately 81.5g, improving grip and airflow.
- Adjustable DPI: Four-speed DPI settings (800-1600-2400-3600) for precise control, indicated by different LED colors.
- 6 Programmable Buttons: Includes Left, Right, Middle, DPI key, Forward, and Back buttons with a 10 million click lifespan.
- High-Precision Tracking: Equipped with a professional IC optical sensor for accurate positioning, 30 IPS movement speed, 4800 FPS refresh rate, and 10G acceleration.
- Ergonomic Design: Ultra-thin appearance and ergonomic shape ensure a comfortable grip for extended use.
- Wide Compatibility: Supports Windows (XP/Vista/7/8/Server 2003/2000/Win10) and macOS (10.10 and above recommended). Compatible with desktop computers, laptop computers, and Smart TVs with USB interfaces.
Specifications
| Feature | Specification |
|---|---|
| Connection Method | 2.4G Wireless |
| Power Type | Rechargeable (Built-in 750mAh Polymer Lithium Battery) |
| Number of Buttons | 6 |
| Number of Rollers | 1 |
| Hand Orientation | Right |
| Interface Type | USB (for receiver and charging) |
| Operation Mode | Opto-electronic |
| DPI Settings | 800-1600-2400-3600 (4 adjustable gears) |
| Wireless Distance | 10 meters |
| Button Life | 10 million switches |
| Rated Voltage/Current | 3.7V / 15mA |
| Movement Speed (IPS) | 30 IPS |
| Acceleration | 10 G |
| Refresh Rate | 4800 FPS |
| Product Weight | 81.5g |
| Product Dimensions (L*W*H) | 130mm * 67mm * 38mm |
| Package Weight | 139g |
| Package Dimensions | 13.5cm * 8.5cm * 4.7cm |
| Certification | CE |
| Origin | Mainland China |
Package Contents
- 1 x HXSJ T66 Wireless Gaming Mouse
- 1 x USB Receiver
- 1 x USB Charging Cable (Type-C)
- 1 x English User Manual
Setup Instructions
- Unpack: Carefully remove the T66 wireless mouse, USB receiver, and charging cable from the packaging.
- Initial Charge: Before first use, it is recommended to charge the mouse for 1-2 hours. Connect the provided USB charging cable to the mouse's Type-C port and to a standard USB power source (e.g., computer USB port, USB wall adapter). Avoid using fast chargers. The mouse can be used while charging.
- Connect Receiver: Locate the mini USB receiver, usually stored in a compartment on the underside of the mouse. Plug the mini USB receiver into an available USB port on your computer (desktop, laptop, or compatible Smart TV).
- Power On: Turn on the mouse using the power switch located on the underside. There might be options for 'ON', 'OFF', or 'ON with light'. Select 'ON' or 'ON with light' as desired.
- Plug and Play: The mouse is designed for plug-and-play operation. Your computer should automatically detect and install the necessary drivers.


Operating Instructions
Button Functions

- Left Button: Standard left-click function.
- Right Button: Standard right-click function.
- Middle Button (Scroll Wheel): Scroll up/down, click for middle-button functions.
- DPI Key: Cycles through DPI settings.
- Forward Button: Navigates forward in web browsers or applications.
- Back Button: Navigates backward in web browsers or applications.
- Light Mode Key (Underside): Cycles through RGB lighting modes or turns off the light.
- Power Switch (Underside): Turns the mouse ON/OFF or ON with RGB lighting.
DPI Adjustment
Press the DPI key (located behind the scroll wheel) to cycle through the four available DPI settings. Each DPI setting is indicated by a specific LED light color:
- 800 DPI: Green LED light
- 1600 DPI: Purple LED light
- 2400 DPI: Blue LED light
- 3200 DPI: Red LED light

RGB Lighting Modes
The T66 mouse features multiple RGB backlight modes to customize your gaming atmosphere. Use the Light Mode Key on the underside of the mouse to switch between different lighting effects. You can also turn off the lighting if preferred.
- Marquee Effect
- Breathing
- Tail
- Neon
- Response
- Wave
- Steady
- Colorful Streaming

Power Management
The T66 mouse incorporates a three-level power saving mode to conserve battery life:
- First Sleep (3 seconds): After 3 seconds of inactivity, the mouse enters a light sleep mode, indicated by continuous light flashing.
- Secondary Sleep (approx. 1 minute): After about 1 minute of inactivity, the mouse enters a deeper sleep, with intermittent flashing lights.
- Level 3 Sleep (approx. 8 minutes): After about 8 minutes of inactivity, the mouse enters its deepest sleep mode, and the lights turn off completely.
The mouse also features an automatic sleep function after 5 seconds of inactivity to save power.

Charging
To charge your T66 mouse, connect the provided USB charging cable to the Type-C charging interface on the front of the mouse and to a USB power source. The mouse can be used normally while it is charging. A full charge typically takes about 2 hours.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the mouse. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters the internal components.
- Environment: Do not use or store the mouse in high-temperature environments, as this can damage the battery and internal electronics.
- Disassembly: Do not attempt to disassemble the mouse without professional guidance. Unauthorized disassembly may void your warranty and cause damage.
Troubleshooting
- Mouse not responding:
- Ensure the USB receiver is securely plugged into a working USB port on your computer.
- Check if the mouse is powered on using the switch on the underside.
- The mouse battery might be low. Connect the charging cable and try again.
- Try plugging the USB receiver into a different USB port.
- Lag or intermittent connection:
- Ensure the mouse is within the 10-meter wireless range of the receiver.
- Minimize interference from other 2.4Ghz wireless devices.
- Ensure the mouse is fully charged.
- RGB lights not working:
- Check the power switch on the underside; ensure it's set to 'ON with light' or cycle through light modes using the Light Mode Key.
- The mouse might be in a power-saving sleep mode. Move the mouse to wake it up.
- Is this product original?
- Yes, this is an original HXSJ product.
- Does it have Bluetooth connectivity?
- No, the HXSJ T66 operates solely on a 2.4Ghz wireless connection via its dedicated USB receiver. It does not support Bluetooth.
User Tips
- For optimal performance, always ensure your mouse is adequately charged, especially before long gaming sessions.
- Experiment with the different DPI settings to find the sensitivity that best suits your gaming style or work tasks.
- Utilize the Forward and Back buttons for quick navigation in web browsers and file explorers to enhance productivity.
- If you experience any issues, a simple restart of the mouse (power off and on) or replugging the USB receiver can often resolve minor glitches.
Warranty and Support
For any product-related issues, questions, or if you are not satisfied with your purchase, please contact the seller's customer support or after-sales department. They will provide assistance and guidance for troubleshooting or resolving any concerns you may have.





