Introduction
Thank you for choosing the sunffice Ergonomic Vertical Mouse. This manual provides essential information for setting up, operating, and maintaining your new mouse. Designed for comfort and performance, this 2.4G wireless mouse features an ergonomic vertical design, adjustable DPI, and vibrant RGB lighting to enhance your computing experience.
Key Features
- Ergonomic Vertical Design: Promotes a natural hand and wrist posture, reducing strain.
- 2.4G Wireless Connectivity: Provides a stable and reliable connection up to 10 meters.
- Rechargeable Battery: Built-in 750mAh battery with Type-C charging port.
- Adjustable DPI: Multiple DPI settings (800-1200-1600-2400-3600-4800) for precise control.
- RGB Backlight: Features 11 different RGB lighting modes including flash, breathing, and static effects.
- Multimedia Buttons: Integrated controls for volume and track navigation.
- 6 Buttons: Standard left/right click, scroll wheel, DPI button, forward/backward buttons, and multimedia controls.

Specifications
| Attribute | Value |
|---|---|
| Item | Ergonomic Vertical Mouse |
| Brand Name | sunffice |
| Model | V888 |
| Connect Method | 2.4G Wireless |
| Wireless Transmission Distance | ≥10m |
| Power Type | Rechargeable (750mAh) |
| Interface Type | USB (for receiver), Type-C (for charging) |
| Number of Buttons | 6 |
| Number of Rollers | 2 (main scroll wheel, plus multimedia scroll) |
| DPI | 800-1200-1600-2400-3600-4800 (Adjustable) |
| Sensor Model | Pixart 3361 (12000 DPI|250 IPS|50G) |
| Acceleration | 25 G |
| Movement Speed | 200 IPS |
| Operation Mode | Opto-electronic |
| Tracking Method | Optical |
| Dimension | 127*81*78.6 mm |
| Hand Orientation | Right |
| Material | ABS |
| Color | Black |
| Certification | CE, UL |
| System Support | Windows XP/7/8/10+, Android 4.4+, IOS13+, Mac OS10.5+, Linux Kernel 2.6+2, Chrome OS |

Package Contents
The package includes:
- 1 x Ergonomic Vertical Mouse
- 1 x USB Receiver
- 1 x Charging Cable (Type-C)
Setup Instructions
- Unpack: Carefully remove the mouse, USB receiver, and charging cable from the packaging.
- Locate USB Receiver: The USB receiver is stored in a compartment on the bottom of the mouse. Gently slide open the compartment cover and remove the receiver.
- Connect Receiver: Plug the USB receiver into an available USB port on your computer.
- Power On: On the bottom of the mouse, locate the power switch. Slide it to the 'on' or 'light' position to power on the mouse. The 'light' position activates the RGB lighting.
- Initial Charge: For optimal performance, it is recommended to fully charge the mouse before first use. Connect the provided Type-C charging cable to the charging port on the front of the mouse and to a USB power source. A red indicator light will illuminate during charging and turn off when fully charged.

Operating Instructions
Your ergonomic vertical mouse is designed for intuitive use. Here's how to utilize its various functions:
Button Functions

- Left Button: Standard left-click function.
- Right Button: Standard right-click function.
- Scroll Wheel: Scrolls content up or down.
- DPI Button: Press to cycle through DPI settings (800-1200-1600-2400-3600-4800). The RGB lighting will change color to indicate the current DPI level.
- Forward Button: Navigates forward in web browsers or file explorers.
- Backward Button: Navigates backward in web browsers or file explorers.
- Multimedia Controls (on scroll wheel):
- Scroll Wheel Up: Volume Up.
- Scroll Wheel Down: Volume Down.
- Press Right on Scroll Wheel: Next Song.
- Press Left on Scroll Wheel: Previous Song.
RGB Lighting Modes
The mouse features 11 different RGB lighting modes. Use the dedicated 'off/on/light' switch on the bottom of the mouse to select the 'light' mode, then press the light mode switch button (located near the DPI button) to cycle through the various effects, including static colors, breathing, and flashing modes.
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.
- Storage: When not in use for extended periods, turn off the mouse to conserve battery life. Store in a cool, dry place.
- Battery Care: Avoid fully discharging the battery frequently. Charge the mouse when the low battery indicator appears.
Troubleshooting
- Mouse not responding:
- Ensure the mouse is powered on.
- Check if the USB receiver is securely plugged into the computer.
- Verify the mouse battery is charged.
- Try plugging the USB receiver into a different USB port.
- Intermittent connection:
- Ensure the mouse is within the 10m wireless range of the receiver.
- Avoid obstructions between the mouse and receiver.
- Check for potential interference from other wireless devices.
- RGB lights not working:
- Ensure the power switch on the bottom of the mouse is set to the 'light' position.
- Press the light mode switch button to cycle through modes.
User Tips
- Multimedia Functionality: The mouse's multimedia controls (volume and track navigation) are designed to interact with your computer's native sound and media player settings. Please note that not all third-party media players may fully support these functions.
- Ergonomic Comfort: The vertical design is intended to reduce wrist strain. Experiment with your hand position to find the most comfortable grip that aligns your wrist and forearm naturally.
- DPI Adjustment: Utilize the adjustable DPI settings to match your task. Lower DPI is ideal for precise work like graphic design, while higher DPI is suitable for faster movements in gaming or general browsing.
Warranty and Support
This product comes with a one-year guarantee from the date of receipt. In case of any malfunctioning for guaranteed items, we will freely repair or replace the product. The buyer is responsible for the shipping freight associated with warranty claims.