1. Product Overview
The AJAZZ AJ139 V2 MC is a versatile tri-mode gaming mouse designed for precision and responsiveness. It features a PAW3311 sensor for accurate tracking, a 1000Hz return rate for smooth performance, and a long-lasting 500mAh battery. Its compact and lightweight design makes it suitable for extended use and portability.

Figure 1.1: AJAZZ AJ139 V2 MC Gaming Mouse and Charging Dock.
Video 1.1: An overview of the AJAZZ AJ139 V2 MC Gaming Mouse, highlighting its features and design.
2. Package Contents
Ensure all items are present in the package:
- AJAZZ AJ139 V2 MC Gaming Mouse
- Charging Dock
- USB-C Charging Cable
- 2.4G USB Receiver (Dongle)
- User Manual
3. Key Features
- PAW3311 Sensor Technology: Equipped with the PAW3311 sensor, this mouse ensures precise tracking and accurate cursor control for optimal performance.
- High 1000Hz Return Rate: Experience smooth and responsive performance with a 1000Hz return rate, enhancing your gaming or work experience.
- Long-Lasting 500mAh Battery: The integrated 500mAh battery provides extended power, ensuring uninterrupted use for prolonged periods.
- Tri-Mode Connectivity: Supports versatile connectivity options including Wired, 2.4G Wireless, and Bluetooth, adapting to various devices and setups.
- Compact and Lightweight Design: Weighing approximately 66 grams, the mouse features a compact design for easy portability and comfortable use during long sessions.
- Customizable RGB Lighting: Features integrated RGB lighting for personalized aesthetics.

Figure 3.1: Detailed view of the PAW3311 sensor technology.
Video 3.1: Demonstration of the mouse's 500mAh battery life.

Figure 3.2: The lightweight design of the AJAZZ AJ139 V2 MC mouse.
4. Setup Guide
4.1. Connecting the Mouse
The AJAZZ AJ139 V2 MC offers three connection modes:

Figure 4.1: Visual representation of the three connection modes.
- 2.4G Wireless Mode:
- Locate the 2.4G USB receiver stored in the compartment on the underside of the mouse.
- Plug the USB receiver into an available USB port on your computer.
- Slide the switch on the bottom of the mouse to the '2.4G' position. The mouse will automatically connect.
- Bluetooth Mode:
- Slide the switch on the bottom of the mouse to the 'BT' position.
- On your device, open Bluetooth settings and search for new devices.
- Select 'AJAZZ AJ139 V2 MC' from the list to pair.
- Wired Mode:
- Connect the USB-C charging cable to the mouse and the other end to your computer's USB port.
- The mouse will function as a wired device and charge simultaneously.
4.2. Charging the Mouse
The mouse can be charged using the included charging dock or directly via the USB-C cable.
- Using the Charging Dock:
- Connect the USB-C charging cable to the charging dock and then to a power source (e.g., computer USB port, USB wall adapter).
- Place the mouse onto the charging dock, aligning the magnetic contacts. The RGB lighting on the dock and mouse will indicate charging status.
- Direct USB-C Charging:
- Connect the USB-C charging cable directly to the mouse and a power source.

Figure 4.2: The mouse being charged on its wireless charging base.
5. Operating Instructions
5.1. DPI Adjustment
The mouse features a dedicated DPI adjustment button on its underside, allowing you to cycle through different sensitivity levels. Press the button to change the DPI setting to suit your preference.

Figure 5.1: Location of the DPI adjustment button and connection mode switch on the mouse underside.
5.2. Button Functions
The mouse is equipped with 6 programmable buttons:
- Left Click Button
- Right Click Button
- Scroll Wheel (Clickable)
- DPI Adjustment Button (on underside)
- Two Side Buttons (typically for forward/backward navigation)
For advanced customization of button functions and macros, please refer to the official AJAZZ software (downloadable from the manufacturer's website).
5.3. RGB Lighting Control
The mouse and charging dock feature customizable RGB lighting. Specific controls for lighting modes and colors are typically managed through the official AJAZZ software. A dedicated light button on the underside of the mouse allows for basic cycling or turning off the lighting.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the mouse surface. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters the internal components.
- Sensor Care: Keep the optical sensor on the underside of the mouse clean and free from dust or debris to maintain tracking accuracy.
- Battery Longevity: To prolong battery life, avoid fully discharging the mouse frequently. Charge it when the battery indicator is low.
7. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Mouse not responding in 2.4G Wireless mode. | Ensure the 2.4G USB receiver is securely plugged into a USB port and the mouse switch is set to '2.4G'. Try a different USB port. |
| Mouse not pairing via Bluetooth. | Ensure the mouse switch is set to 'BT' and your device's Bluetooth is enabled and discoverable. Try unpairing and re-pairing the device. |
| Mouse not charging. | Verify the USB-C cable is properly connected to both the dock/mouse and the power source. Ensure the mouse is correctly seated on the charging dock's magnetic contacts. |
| Inconsistent tracking or cursor movement. | Clean the optical sensor on the underside of the mouse. Ensure you are using the mouse on a suitable surface (e.g., a mouse pad). |
| RGB lighting not working. | Check the mouse's software settings for lighting control. Ensure the mouse has sufficient battery charge. |
8. Technical Specifications
| Feature | Specification |
|---|---|
| Brand | AJAZZ |
| Model Name | Aj139 V2 MC |
| Color | V2 MC Black |
| Connectivity Technology | Bluetooth, USB, 2.4G Wireless |
| Movement Detection Technology | Optical (PAW3311 Sensor) |
| Mouse Maximum Sensitivity | 12000 Dots per Inch (DPI) |
| Return Rate | 1000Hz |
| Battery Capacity | 500mAh |
| Button Quantity | 6 |
| Hand Orientation | Right |
| Compatible Devices | Desktop Computer |
| Operating System | Windows |
| Range | 10 meters |
| Item Weight | 4 Ounces (approx. 113 grams) |
| Item Dimensions L x W | 5"L x 2.5"W (approx. 12.7cm x 6.35cm) |
| Embellishment Feature | RGB Lighting |
| Enclosure Material | Plastic |
| Finish | Matte |
9. Warranty and Support
This product comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the official AJAZZ website or contact your retailer.
For technical support, troubleshooting assistance, or any product-related inquiries, please visit the AJAZZ official support page or contact their customer service team.
Online Resources:
AJAZZ Official Store





