Model: V638
The J-Tech Digital V638 Ergonomic Wireless Mouse is designed to provide a comfortable and efficient computing experience. Its unique vertical design reduces wrist and arm strain, making it ideal for extended use. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your new mouse.

Image: The J-Tech Digital V638 Ergonomic Wireless Mouse, showcasing its vertical design and RGB lighting accents.
Before you begin, ensure all items are present in the package:

Image: Contents of the J-Tech Digital V638 package, including the mouse, palm rest, USB cable, and user manual.
The mouse comes with a built-in rechargeable battery. For optimal performance, fully charge the mouse before first use.

Image: The J-Tech Digital V638 mouse connected to a laptop via its USB charging cable, illustrating the charging process.

Image: Underside view of the J-Tech Digital V638 mouse, highlighting the power switch and the USB receiver slot.

Image: Diagram illustrating the various buttons and features of the J-Tech Digital V638 mouse, including Left Click, Scroll Wheel, Right Click, DPI Cycle, Removable Palm Rest, Backward, RGB Light Shift, Forward, and Charging Port.
| Button/Feature | Function |
|---|---|
| Left Click | Standard primary click function. |
| Scroll Wheel | Scrolls content vertically. Can also be clicked for middle-click functionality. |
| Right Click | Standard secondary click function (context menu). |
| DPI Cycle Button | Cycles through DPI settings: 800, 1200, 1600, 3200. |
| Forward Button | Navigates forward in web browsers or file explorers. |
| Backward Button | Navigates backward in web browsers or file explorers. |
| RGB Light Shift | Controls the RGB lighting effects. |
| Removable Palm Rest | Provides additional wrist support and can be detached. |
The DPI (Dots Per Inch) setting determines the sensitivity of the mouse cursor. Press the DPI Cycle Button (located near the scroll wheel) to switch between the available sensitivities: 800, 1200, 1600, and 3200 DPI.

Image: A diagram showing the DPI button and the four adjustable DPI levels (800, 1200, 1600, 3200) for the J-Tech Digital V638 mouse.
The V638 mouse features three power-saving modes to conserve battery life:

Image: The J-Tech Digital V638 mouse on a desk next to a laptop, illustrating the concept of its three power-saving (sleep) modes.
| Feature | Detail |
|---|---|
| Model | V638 |
| Connectivity | 2.4G Wireless (USB Receiver) |
| DPI Settings | 800 / 1200 / 1600 / 3200 |
| Battery Type | Built-in Rechargeable Lithium Ion |
| Product Dimensions | 5.83 x 3.74 x 3.9 inches (148mm x 95mm x 99mm) |
| Item Weight | 0.67 ounces |
| Compatibility | Windows 7/8/10, XP, Vista 7/8, Linux, Mac OS |
| Color | Black |

Image: The J-Tech Digital V638 mouse with dimensions indicated, showing its height (99mm), length (148mm), and width (95mm).
The J-Tech Digital V638 ergonomic mouse includes a One-Year Manufacturer Warranty.
For free lifetime technical support, please contact our US-based Customer Support Team. They are available Monday to Friday, 9 AM to 6 PM CST.
Contact information can be found on the J-Tech Digital Seller Page.

Image: The J-Tech Digital company logo, representing the brand's commitment to quality and support.
J-Tech Digital is dedicated to providing high-quality audio-video solutions and excellent customer support.