Wireless Ergonomic Mouse


  • Vertical ergonomic design
  • Reliable 2.4 GHz wireless connection
  • High-resolution Adjustable 1600 DPI sensor
  • Silent click
  • Up to 9 months battery life
SKU: 4545234234-4-1-1-1-1-1-1-1-1-1-1-1-2 Category:
User Manual

User Manual

Download the Quick Start Guide for this product



Download the Declaration of Conformity for this product

General FAQ

General FAQ

Check commonly asked questions for further information

Frequently Asked Questions: EV250

Please check our FAQs to find answers and solutions to common questions.

How to connect EV250 to a MacBook/ PC/ Laptop via 2.4 GHz wireless transmission with a USB dongle?

1. Take out the receiver from the mouse.
2. Place the receiver into a PC or laptop USB port.

How to repair the 2.4 GHz wireless connection?

After you unplug and replug the USB receiver, within 30 seconds, turn off the mouse and then turn it on with the left key pressed.

I have lost/broken the USB receiver (dongle). Can I receive a new USB-receiver?

It is not possible to provide a replacement receiver for this product.
This is because during production the product and the Nano USB receiver (dongle) are assigned a unique code, so the product can only communicate with the bundled original receiver. This production process is also performed for security reasons.

I just bought it and cannot find the USB receiver. Where is it?

The USB receiver is stored inside the battery compartment of the mouse. The special receiver storage compartment is located there so you can always store the dongle safely when not in use to prevent damage or loss.

The mouse arrow shakes, moves strangely or does not move at all. What can I do?

1. Use a mousepad or a piece of paper to check if the surface may be the reason.
2. Try using the mouse on a different surface.
3. Clean the sensor on the bottom of the mouse with a dry cloth.

The mouse shows irregular failures during usage?

1. Move other active wireless devices away from the mouse and the USB receiver.
2. The PC can not respond immediately because the CPU is under full load.
3. Try changing the battery.

The mouse is suddenly not working. What can I do?

1. Make sure the device is turned on.
2. Make sure the USB receiver is plugged into the PC/ laptop’s USB port.
3. If the PC/ laptop cannot initially recognize the USB receiver, please replug the receiver.
4. Check if the battery is installed correctly.
5. In case of a low battery, please try changing the battery.
6. Move other working wireless devices away from the mouse and the USB receiver.
7. Please keep away from walls or big objects because this may reduce the range.

My product is faulty. What can I do?

We offer a ‘return to the retailer’ warranty on our products. In case of a defect, please return the product to your retailer with a clear description of the problem, proof of purchase, and all accessories. During the warranty period, you will receive a replacement product from the retailer if available.

Couldn’t find the answer in the FAQs?

Contact us and fill out the form with as much information as possible.
One of our support staff will help you as soon as possible.



Connections modes Wireless (dongle)
Connections 2.4 GHz
Operating Distance Up to 10 m range, 360° coverage
USB Type 3.0
Nano USB Receiver Plug & Play
Nano USB Receiver Storage Compartment Yes


Windows XP/Vista/7/8/10 Yes
macOS Yes


Buttons 3
Silent Click Yes
DPI 1600, Adjustable
DPI Switch Yes
Tracking Technology Optical
Drivers Yes


Battery Included Yes
Batteries 2 AAA Alkaline
Battery Life 9 months


Height 69 mm
Width 117 mm
Depth 76 mm
Weight 89 g

Model Information

EAN 6940056135315
SKU 13531
Model Name EV250
Color Black