---
product_id: 540964850
title: "ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite"
brand: "protoarc"
price: "$8.03"
currency: USD
in_stock: false
reviews_count: 12
url: https://www.desertcart.us/products/540964850-protoarc-em03-wireless-bluetooth-trackball-mouse-ergonomic-rgb-rollerball-rechargeable
store_origin: US
region: United States of America
---

# 3-device multi-mode Bluetooth & 2.4G wireless connection 930mAh rechargeable battery with up to 1 month runtime 44mm ergonomic trackball for effortless cursor control ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite

**Brand:** protoarc
**Price:** $8.03
**Availability:** ❌ Out of Stock

## Summary

> 🖱️ Elevate your workflow with the ProtoArc: where ergonomic innovation meets wireless freedom.

## Quick Answers

- **What is this?** ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite by protoarc
- **How much does it cost?** $8.03 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/540964850-protoarc-em03-wireless-bluetooth-trackball-mouse-ergonomic-rgb-rollerball-rechargeable)

## Best For

- protoarc enthusiasts

## Why This Product

- Trusted protoarc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Quiet Clicks, Maximum Focus:** Enjoy smooth, silent clicks that keep your workspace peaceful and your concentration uninterrupted.
- • **Vibrant RGB Ambiance Control:** Customize your workspace vibe with 4 dynamic RGB lighting modes or turn off lights to maximize battery life and focus.
- • **Seamless Multi-Device Mastery:** Switch instantly between three connected devices—Windows, Mac, Android, and iPad—without missing a beat or fumbling for cables.
- • **Power Through Your Day, Wire-Free:** Rechargeable 930mAh battery delivers up to 30 days of use on a single charge, keeping you unplugged and productive.
- • **Effortless Precision at Your Fingertips:** Navigate with a single finger on a large 44mm trackball designed to reduce wrist strain and boost comfort during marathon work sessions.

## Overview

The ProtoArc Wireless Trackball Mouse EM03 features a 44mm ergonomic index finger trackball designed for large hands, reducing wrist fatigue by enabling cursor control without arm movement. It supports triple wireless connectivity (Bluetooth & 2.4G) for seamless switching between up to three devices including Windows, Mac, Android, and iPad. With a rechargeable 930mAh battery lasting up to one month per charge (lights off), adjustable 5-level DPI for precision, and customizable RGB lighting modes, it combines comfort, style, and productivity in a compact, quiet-click design ideal for professionals working in tight or cluttered spaces.

## Description

ProtoArc Wireless Bluetooth Trackball Mouse, EM03 Ergonomic RGB Rollerball Mouse Rechargeable Computer Laptop Mouse, 3 Device Connection&Index Finger Control for iPad, Mac, Windows-Graphite

Review: Great at what it does. - I'm not going to pull the punch here; if you have not used this type of pointing device before it can take a lot of time to get used to it - especially if you normally use a mouse or track pad. Once familiar with such a device they are really good to use. This 'trackball' style mouse is actually very comfortable and easy to use. One of my laptops is used when sitting in a comfortable but somewhat constraining armchair. Using a mouse or even the track pad can be uncomfortable in this situation. The trackball is set off to the side like a mouse but fixed in place a bit closer. I have used many pointing devices including variations on the trak or tracker ball. This device is convenient, comfortable and easy to maintain. The device being wireless was initially concerning to me but I have used it for basic gaming, web surfing, 3D modelling and office work. The variable polling rates are great, the device recharges fairly fast and the charge lasts well. The RGB lights are not needed but nice and the ability to switch between controlled devices could be really useful.
Review: Good Value High Quality Trackball. - I bought this to replace a Kensington Expert Mouse that I thought was going to be an upgrade for me but was the opposite and was returned because of very poor quality making it abysmal value. This is superior in every way, smooth track ball and scrolling operations, wireless with three connection methods and a big bonus it's half the price of the Kensington. It has a colour changing LED light around the ball but this can be disabled if it's not your thing. Controls are a bit different from what I have been used to so a bit of a learning curve but after a week or so it is now second nature. I originally used Kensington orbits that tended to last about two years before the micro switches failed. It's to early to tell about the reliability of this one yet if it breaks early I will return and edit this review.

## Features

- ERGONOMIC INDEX FINGER TRACKBALL: Equipped with a 44mm trackball, move your cursor with one finger movement instead of moving your wrist and arm. It will effectively reduce fatigue and strain for your wrist and arm. Not only work on flat surfaces, but also on your leg, sofa and other surfaces as well, especially on the narrow space, such as the messy desktop
- BLUETOOTH & 2.4G WIRELESS CONNECTION：PLUG and PLAY. This trackball mouse has triple connection modes. You can control three devices at the same time, switch freely between Android, tablet and Mac with just one button. Compatible with Windows, Android, Mac OS PC Laptop Desktop etc
- 4 RGB LIGHTING MODE: You can adjust 4 RGB color effects by one button. Rainbow Streaming Light(Default), Rainbow Breathing Light, Neon, Color Mixing Breathing Light. NOTE: The RGB backlit also can be turned off by clicking the light switch button, which can save battery power for the mouse
- RECHARGEABLE & ADJUSTABLE DPI: The Bluetooth RGB Trackball Mouse built-in 930mAh lithium battery. No need to change batteries. It can last 1 month per one full recharge with the lights off. Please remember to turn it off if you do not use it for a long time. 5 DPI levels (200/400/800/1200/1600 DPI) allows you to change the cursor sensitivity easily for more precise tracking
- QUIET CLICKING: Smooth frosted surface and quiet clicks can bring a better user experience and free your worry about bothering others and keep you stay focused while working. Please note that this is an index finger trackball. If you have not used this type of mouse before, please do not purchase it as you may not be accustomed to it

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DJDNVM1L |
| Antenna Location | Gaming |
| Are Batteries Included? | Yes |
| Are Batteries Required | Yes |
| Battery Average Life | 1 months |
| Best Sellers Rank | 47,232 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 995 in Mice |
| Brand Name | ProtoArc |
| Button Quantity | 4 |
| Colour | Slate Ball |
| Compatible Devices | Laptop, Desktop, Personal Computer, Tablet, Smartphone |
| Customer Reviews | 4.4 4.4 out of 5 stars (633) |
| Embellishment Feature | LED |
| Enclosure Material | Plastic |
| Item Dimensions L x W | 12L x 7.6W centimetres |
| Item Type Name | Mouse |
| Item Weight | 100 Grams |
| Manufacturer | ProtoArc |
| Model Name | EM03 |
| Model Number | EM03 Black US+ |
| Mouse Maximum Sensitivity | 1600 Dots per Inch |
| Movement Detection | Trackball |
| Network Connectivity Technology | Bluetooth |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Operating System | Android, Mac OS X 10.0 Cheetah, Windows |
| Power Source | Battery Powered |
| Product Features | Ergonomic Design, LED Lights, Rechargeable, Soundless, Wireless |
| Product Finish Type | Matte |
| Range | 10 meters |
| Style Name | Ergonomic |
| Theme | Ergonomic Office |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** ProtoArc
- **Colour:** Slate Ball
- **Connectivity technology:** Bluetooth
- **Movement detection technology:** Trackball
- **Special feature:** Ergonomic Design, LED Lights, Rechargeable, Soundless, Wireless

## Images

![ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite - Image 1](https://m.media-amazon.com/images/I/6119D8sbbxL.jpg)
![ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite - Image 2](https://m.media-amazon.com/images/I/61LDdlbL+bL.jpg)
![ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite - Image 3](https://m.media-amazon.com/images/I/71TvoUNVCWL.jpg)
![ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite - Image 4](https://m.media-amazon.com/images/I/71786VKsytL.jpg)
![ProtoArc EM03 Wireless Bluetooth Trackball Mouse, Ergonomic RGB Rollerball Rechargeable for Computer, Laptop, 3 Device Connection & Index Finger Control for iPad, Mac, Windows - Graphite - Image 5](https://m.media-amazon.com/images/I/7198x8h2YhL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: I have very shaky hands, would the roller ball mouse help me be more precise. I want it only for artwork.**
A: Hello. Compared to “normal” mouse is the trackball mouse good for a person who has shaky hands. If you choose our ProtoArc EM03 trackball mouse, you rest your hand on the mouse lightly and use your index finger to navigate. The mouse does not move, only your index finger moves. If you have any other questions, pls feel free to contact us any time.

**Q: When I turn the mouse over to access the buttons on the bottom, the ball barely holds in place and falls out after any little shake. Is this normal?**
A: Yes. The ball isn't held in at all. You need to be aware and remove the ball every time so as not to drop and damage it . The pins in tha ball cup need to be cleaned regularly so this is an excellent time to check out as well. Hope this helps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great at what it does.
*by N***H on 15 July 2025*

I'm not going to pull the punch here; if you have not used this type of pointing device before it can take a lot of time to get used to it - especially if you normally use a mouse or track pad. Once familiar with such a device they are really good to use. This 'trackball' style mouse is actually very comfortable and easy to use. One of my laptops is used when sitting in a comfortable but somewhat constraining armchair. Using a mouse or even the track pad can be uncomfortable in this situation. The trackball is set off to the side like a mouse but fixed in place a bit closer. I have used many pointing devices including variations on the trak or tracker ball. This device is convenient, comfortable and easy to maintain. The device being wireless was initially concerning to me but I have used it for basic gaming, web surfing, 3D modelling and office work. The variable polling rates are great, the device recharges fairly fast and the charge lasts well. The RGB lights are not needed but nice and the ability to switch between controlled devices could be really useful.

### ⭐⭐⭐⭐⭐ Good Value High Quality Trackball.
*by O***E on 23 March 2025*

I bought this to replace a Kensington Expert Mouse that I thought was going to be an upgrade for me but was the opposite and was returned because of very poor quality making it abysmal value. This is superior in every way, smooth track ball and scrolling operations, wireless with three connection methods and a big bonus it's half the price of the Kensington. It has a colour changing LED light around the ball but this can be disabled if it's not your thing. Controls are a bit different from what I have been used to so a bit of a learning curve but after a week or so it is now second nature. I originally used Kensington orbits that tended to last about two years before the micro switches failed. It's to early to tell about the reliability of this one yet if it breaks early I will return and edit this review.

### ⭐⭐⭐⭐ Pleasure to use with useful functionality
*by J***N on 4 April 2024*

Update - I now have two of these. Having had wrist/thumb issues over the long term using other mice, thumb trackballs, even the vertical mice, this has proved a comfortable long term solution for me and is also ideal where desk space is limited. ORIGINAL: I have had this trackball for a couple of weeks now. Initially I wasn't sure how well it positioned my wrist but can now confidently say I have experienced no wrist pain. The trackball is an absolute pleasure to use, the ball is very smooth and the buttons work well. All I would say is give it at least a couple of days before passing judgement. The two bluetooth pairings plus a USB dongle are very welcome, the bluetooth provides a battery level indication on my chromebook so I know when to give it a charge in good time - the battery is USB rechargeable. Build is good. For comparison, I also use thumb trackballs but tend to find with too much use my thumb can lock. My other go to for preventing wrist/carpal problems are vertical mice. Previously, I have used Kensingtons trackballs but they are ridiculously expensive in the UK for what you get (shortage of buttons, scroll wheels) and as far supposed reliability, I had the scroll wheel fail on one after only a couple of years light usage. So very happy with this trackball but appreciate early days yet so rest assured I will update this review should anything change.

## Frequently Bought Together

- ProtoArc Wireless Trackball Mouse Bluetooth, EM03 Ergonomic RGB Finger-operated Rechargeable Computer Laptop Mouse, 3 Device Connection, Compatible with iPad, Mac, Windows, Black (DE-EM03(Black))
- ProtoArc Backlit Wireless Ergonomic Keyboard, EK01 Plus Ergo Keyboard with Wrist Rest, Split Design, USB-C Charging, Bluetooth and USB, Natural Typing Compatible with Windows/Mac/Android

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-26*