1. Introduction
Thank you for choosing the MechLands AJAZZ AJ199 Lightweight Gaming Mouse. This manual provides detailed instructions for setting up, operating, and maintaining your new gaming mouse. Please read this manual carefully before use to ensure optimal performance and longevity of your device.
2. Package Contents
Verify that all items are present in your package:
- MechLands AJAZZ AJ199 Lightweight Gaming Mouse
- USB-C Charging Cable
- 2.4GHz USB Receiver
- User Manual (this document)
3. Product Overview
The AJAZZ AJ199 is a lightweight gaming mouse designed for precision and versatility. It features a durable carbon fiber composite shell, a high-performance PAW3311 optical sensor, and supports three connectivity modes.

Image: MechLands AJAZZ AJ199 Gaming Mouse highlighting 3 modes connectivity, DPI range, PAW3311 sensor, 1000Hz polling rate, 58g lightweight design, and ergonomic shape.
3.1 Mouse Components and Functions

Image: Detailed view of the mouse, showing the top and bottom with labeled buttons and features.
- Left Click: Standard left mouse button function.
- Right Click: Standard right mouse button function.
- Middle Key / Scroll Wheel: Scroll function and middle click.
- Forward Button: Navigates forward in web browsers or applications.
- Backward Button: Navigates backward in web browsers or applications.
- DPI Button / Pair Key: Located on the bottom. Short press to cycle DPI, long press to initiate Bluetooth pairing.
- Mode Switch: Located on the bottom, allows switching between 2.4G wireless, OFF, and Bluetooth modes.
- Receiver Slot: Storage for the 2.4GHz USB receiver.
3.2 Dimensions and Weight

Image: Visual representation of the mouse's length, width, height, and weight.
- Length: 118.6 ± 0.2 mm
- Width: 62.2 ± 0.2 mm
- Height: 39.6 ± 0.2 mm
- Weight: 58g
4. Setup
The AJAZZ AJ199 mouse offers three connectivity options: 2.4GHz Wireless, Bluetooth, and USB-C Wired.

Image: The mouse connected to various devices, illustrating its multi-mode connectivity.
4.1 2.4GHz Wireless Connection
- Locate the 2.4GHz USB receiver stored in the slot on the bottom of the mouse.
- Plug the USB receiver into an available USB port on your computer.
- Set the mode switch on the bottom of the mouse to the '2.4G' position.
- The mouse will automatically connect to your computer.
4.2 Bluetooth Connection
- Set the mode switch on the bottom of the mouse to the 'BT' position.
- Long press the DPI button/Pair Key on the bottom of the mouse for 3-5 seconds until the indicator light starts blinking, indicating pairing mode.
- On your computer or device, open Bluetooth settings and search for new devices.
- Select 'AJAZZ AJ199' from the list of available devices to pair.
- The indicator light will become solid when successfully paired.
4.3 USB-C Wired Connection
- Connect one end of the provided USB-C cable to the mouse and the other end to an available USB port on your computer.
- The mouse will automatically switch to wired mode and begin charging.
- You can use the mouse in wired mode while it charges.
5. Operating Instructions
5.1 DPI Adjustment
The mouse supports 6-level adjustable DPI settings up to 12,000 DPI. You can cycle through preset DPI levels by short-pressing the DPI button on the bottom of the mouse. For precise customization, use the dedicated software.

Image: Diagram illustrating the 6-level adjustable DPI settings, ranging from 400 to 12,000 DPI.
5.2 Polling Rate Adjustment
The polling rate can be adjusted from 125Hz to 1000Hz for 2.4GHz and USB-C wired connections. For Bluetooth, the polling rate is 125Hz. Adjust the polling rate using the dedicated software to match your preference and usage scenario.

Image: Graphic showing polling rate options for USB-C & 2.4G (125Hz to 1000Hz) and Bluetooth (125Hz).
5.3 Software Customization
Download the official MechLands AJAZZ software for advanced customization options. The software allows you to:

Image: Screenshot of the AJAZZ Driver software, showing options for profiles, macros, DPI speed, and button settings.
- Create and manage multiple user profiles.
- Program macros for complex command sequences.
- Fine-tune DPI settings beyond the preset levels.
- Customize button assignments for personalized control.
The software is compatible with both Windows and Mac operating systems.
6. Charging and Battery
The AJAZZ AJ199 mouse is equipped with a 500mAh rechargeable battery, providing up to 48 hours of usage on a full charge.

Image: The mouse with a large '500mAh' graphic, indicating its rechargeable battery capacity and up to 48 hours of usage.
To charge the mouse, connect it to your computer or a USB power adapter using the provided USB-C cable. The indicator light will show charging status and turn off when fully charged.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the mouse. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the mouse in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the mouse frequently. Charge it when the battery low indicator appears.
8. Troubleshooting
- Mouse not responding:
- Ensure the mouse is charged.
- Check the mode switch on the bottom of the mouse is set correctly (2.4G, BT, or wired).
- For 2.4GHz, ensure the USB receiver is securely plugged in.
- For Bluetooth, ensure the mouse is paired correctly and Bluetooth is enabled on your device. Try re-pairing.
- Try connecting the mouse via USB-C cable to rule out wireless issues.
- Tracking issues or erratic movement:
- Clean the optical sensor on the bottom of the mouse.
- Ensure you are using the mouse on a suitable surface (a mouse pad is recommended).
- Check for any obstructions around the sensor.
- Adjust DPI settings using the DPI button or software.
- Battery not charging:
- Ensure the USB-C cable is properly connected to both the mouse and the power source.
- Try a different USB port or power adapter.
- Verify the USB-C cable is not damaged.
9. Specifications
| Feature | Detail |
|---|---|
| Brand | MechLands |
| Model | AJ199 |
| Connectivity Technology | 2.4GHz Wireless, Bluetooth, USB-C Wired |
| Movement Detection Technology | Optical (PAW3311 Sensor) |
| DPI | Up to 12,000 (6-level adjustable) |
| Polling Rate | 125Hz - 1000Hz (2.4GHz/USB-C), 125Hz (Bluetooth) |
| Battery Capacity | 500mAh Rechargeable |
| Item Weight | 58g (2.05 ounces) |
| Dimensions (L x W x H) | 118.6 x 62.2 x 39.6 mm |
| Special Features | Carbon Fiber Shell, Ergonomic Design, Lightweight |
| Compatibility | Windows, Mac OS, Android |
10. Warranty and Support
MechLands products come with a standard manufacturer's warranty. For detailed warranty information, technical support, or service inquiries, please refer to the official MechLands website or contact their customer support directly. Keep your proof of purchase for warranty claims.





