---
product_id: 734010941
title: "ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK"
brand: "elecom"
price: "KSh6989"
currency: KES
in_stock: true
reviews_count: 13
category: "エレコム(Elecom)"
url: https://www.desertcart.co.ke/products/734010941-elecom-wireless-trackball-mouse-ex-g-left-handed-6-buttons
store_origin: KE
region: Kenya
---

# Gaming-grade optical sensor for precision tracking 2.5mm artificial ruby bearings for smooth glide Up to 125h continuous use in low energy mode ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK

**Brand:** elecom
**Price:** KSh6989
**Availability:** ✅ In Stock

## Summary

> 💼 Elevate your left-hand workflow with precision, comfort, and customizable control

## Quick Answers

- **What is this?** ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK by elecom
- **How much does it cost?** KSh6989 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/734010941-elecom-wireless-trackball-mouse-ex-g-left-handed-6-buttons)

## Best For

- elecom enthusiasts

## Why This Product

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

## Key Features

- • **Customizable 6-Button Layout:** Assign functions to 6 buttons including forward/backward & ring finger button for ultimate workflow efficiency
- • **Ergonomic Left-Handed Design:** Tailored to the six hand muscles for fatigue-free, natural thumb operation
- • **Tilt Wheel for Horizontal Scrolling:** Effortlessly scroll sideways on wide spreadsheets or timelines with intuitive tilt wheel control
- • **Precision Tracking with Ruby Bearings:** Large 2.5mm artificial ruby support balls reduce maintenance and boost cursor control
- • **Wireless Freedom with Compact Receiver:** 2.4GHz wireless range up to 10m, with a micro receiver that stores inside the mouse to avoid loss

## Overview

The ELECOM Wireless Trackball Mouse EX-G is a left-handed, thumb-operated wireless trackball featuring a high-performance gaming-grade optical sensor and large 2.5mm artificial ruby bearings for smooth, precise cursor control. Designed ergonomically to fit the natural contours of the hand, it offers 6 customizable buttons including forward/backward navigation and a tilt wheel for horizontal scrolling. With a 2.4GHz wireless connection and a compact receiver that stores inside the mouse, it delivers up to 125 hours of continuous use on a single AA battery, making it ideal for professionals seeking comfort, efficiency, and long-lasting performance.

## Description

Product Description Specifications: ■Interface: USB ■ Connector Shape: USB-A Male ■Compatible models: Windows OS with USB port and macOS equipped ■ Compatible OS: Windows 11/10/RT8.1/8.1/7/Vista, macOS Sonoma 14/macOS Ventura 13 *Updates and service pack may be required. The landscape scroll function cannot be used on Windows RT8.1. ■Resolution: 750/1500 count (switchable) ■Communication method: GFSK method ■Radio frequency: 2.4GHz band ■Radio distance: When used on magnetic objects (iron desks, etc.): 9.8 ft (3 m), when used on non-magnetic objects (wooden desks, etc.): 32.8 ft (10 m) ■Reading method: optical sensor system ■ Injection light type: invisible wavelength range ■Number of buttons: 6 *Includes wheel buttons ■Number of wheels: 1 ■ Ball diameter: Diameter approx. 1.3 inches (34 mm). ■ Horizontal scroll function: yes ■Receiver storage: Yes. ■ Continuous Operating Time: Low Energy Mode: About 125 hours, High Speed Mode: About 76 hours. ■Standby time: Raw Energy Mode: Approx. 694 days, High Speed Mode: Approx. 694 days. ■ Estimated Battery Usage Period: Raw Energy Mode: Approx. 273 days, High Speed Mode: Approx. 176 days *If you have assigned 5% of the mouse operation for 8 hours per day. - Power supply (main unit): 1 x AA alkaline battery, AA manganese battery, or AA NiMH battery. ■ Rated voltage (body): 1.5V ■Color: Black ■External dimensions (Mouse): Width 3.7 inches (94.7 mm) x Depth 4.9 inches (124.4 mm) x Height 1.9 inches (47.9 mm) ■Size category: L size ■ Weight (Mouse): Approx. 4.5 oz (128 g) *Batteries not included ■External Dimensions (Receiver): Width 0.5 x Depth 0.7 x Height 0.2 inches (13.1 x 18.2 x 5.0 mm) ■ Weight (Receiver): Approx. 0.08 oz (2 g). ■ Accessories: 1 x AA alkaline battery for operation confirmation, 1 x User manual ■Warranty period: 6 months ■Other: ※Warranty card is not included, please store receipts or receipts that can prove your purchase. 【Description】 ■ Wireless track ball for left-hand and thumb operation, with solid basic performance and new features. ■ The sensor detects motion of the trackball is equipped with a game-grade high performance optical sensor, and the optimized optical design around the peripheral for outstanding pointer tracking ■ Adopts large artificial ruby with a diameter of 0.1 inch (2.5 mm) in the support sphere for improved maneuverability. In addition, the large diameter of the support ball reduces maintenance frequency. ■ Focusing on the skeleton and muscles of the six hands that come into contact during operation, the design takes into account the indentations and bulges and achieves a new feeling that is easy to operate. ■ Equipped with "Forward" and "Backward" buttons to increase the efficiency of browsing the webpage. The size and shape of the button make it easier to access ■ Equipped with a function button that can be customized to the location of your ring finger. - The left and right buttons are made with OMRON switches that are highly reliable and have a reputation for the click sensation. - Equipped with a tilt wheel that allows you to scroll left and right by simply tilting the wheel. It is convenient for you to operate the long side screen such as Excel. ■ Comes with a speed change switch that allows you to switch the speed of the pointer to 2 levels of 1500/750 count. ■Button function assignments can be changed using the free downloadable Elecom Mouse Assistant. ■ The ball can be easily removed from the hole on the back side, making it easy to maintain the ball and inner ball cradle. - The wireless system uses a 2.4 GHz band and can be used in a range of about 3.8 ft (10 m) with a non-magnetic body, such as steel desks, and other magnetic bodies. (According to our research) ■ It uses a 1 yen size micro receiver that can be carried with the case without worrying about it being plugged into a laptop's USB port. ■The receiver can be stored inside the mouse, so it is convenient to carry and reduce the risk of losing the receiver. ■ There is a power switch on the back of the main unit to prevent battery drain when not in use. - Equipped with a battery level indicator indicator that notifies you when to change the battery. ■ Simple packaging model makes unpacking work easy. ■ Replacement balls are available. Compatible products are model number:M-B1RD. Product inquiries Elecom General Information Center TEL. 0570-084-465 FAX. 0570-050-012 Reception Time / 10:00 - 19:00 24/7 Legal Disclaimer Updates to the latest version of each OS and installation of service pack may be required. The landscape scroll function is not available on Windows RT8.1

Review: 初めてトラックボールマウスを使いましたが、想像以上に快適でした。 親指で操作するスクロール（ボール）は、最初こそ少し戸惑いますが、慣れるとページ送りや細かい移動がとてもスムーズで、通常のマウスよりも楽に操作できます。 マウス本体を動かす必要がないため、手首や腕への負担が少なく、長時間のPC作業でも疲れにくいのが特に良い点です。 デスクのスペースも取らず、狭い場所やソファなどでも問題なく使えるのは大きなメリットだと思います。 これからさらに使いこなしていけば、作業効率ももっと上がりそうなので、長く付き合えるマウスになりそうです。
Review: 長所は左利きに優しい形状。手首や指の負担が減ってありがたいです。 そしてボタンがたくさん。6つあるのでカスタマイズして楽しめますね。 ボールがついててマウスを動かさずに、カーソルを前後左右に動かせます。机が狭い場合には助かります。 短所は小柄な人には大きくて、ちょっと使いづらいかも。使えないことはありませんが、私は慣れるまで少しかかりました。 私は身長152cmで手は中指から手首まで17cmくらいです。写真はロジクールの小型キーボードk3800wとそれとセットのマウスと比べてみました。 使ってみた感想として、初期状態ではボールがツルツル過ぎて、カーソルが滑ります。これがかなりストレスです。カーソルの速度をHIGHからLOWに切り替えると少し良くなります。それでも滑ると感じたら、Windowsの設定→Bluetoothとデバイスの「マウスポインターの速度」も遅くするとカーソルがゆっくり動くようになります。 それからデバイスのMouseAssistant6が開かないというアクシデントが。アプリを削除して、もう一度ダウンロードからやり直しました。（このデバイスでどこを主ボタンにするかカスタマイズできますが、マウスの主ボタンはWindowsのBluetoothとデバイスのマウスの項目でも、左右どちらを主ボタンにするか決められるので、そろえておいた方が混乱しなくていいと思います）

## Features

- Uses a large artificial ruby with a diameter of 2.5mm (0.098 inch) for the support ball Loaded with reliable fundamental features as well as never-before-seen functionality, this left-hand, thumb-operated wireless trackball delivers advanced cursor tracking
- A left-handed, thumb-operated wireless trackball featuring reliable basic performance and unprecedented new features
- Equipped with a high-performance gaming-grade optical sensor that detects the movement of the trackball, it features a new high-performance lens and optimized peripheral optical design for superior pointer tracking
- Large artificial rubies, each with a diameter of 0.1 inches (2.5 mm), are used for the ball bearings, offering improved maneuverability Due to the larger diameter of the support ball, the support ball is less likely to be buried in dirt and grime such as fingerprints, reducing the frequency of maintenance
- Designed with attention to the six skeletal and muscular structures of the hand that come into contact during operation, and considering the concavities and convexities, it has achieved a new "placement feel" that is as if the shape of the palm has been perfectly mirrored, making it easy to operate

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B016QCPRBM |
| Amazon Bestseller | #1,267 in Computers ( See Top 100 in Computers ) #11 in Computer Trackballs |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Battery Average Life | 6 months |
| Brand | ELECOM |
| Color Name | Black Ball |
| Compatible Devices | Compatible models: Windows OS and macOS equipped with USB port, Compatible operating systems: Windows 11, Windows 10, Windows RT8. |
| Connectivity Technology | 2.4GHz Wireless, USB |
| Customer Reviews | 4.1 4.1 out of 5 stars (4,438) |
| Date First Available | September 24, 2015 |
| Item Model Number | M-XT4DRBK |
| Item Weight | 0.28 Pounds |
| Item model number | M-XT4DRBK |
| Manufacturer | エレコム(ELECOM) |
| Model Year | 2015 |
| Operating System | Windows 10, Windows RT8.1, Windows 8.1, Windows 7, Windows Vista, Macintosh OS X 10.10 |
| Product Dimensions | 9.4 x 4.57 x 12.45 cm; 127.01 g |
| Release date | October 17, 2015 |
| Size | 無線(ワイヤレス) |
| Special Features | Ergonomic Design, Multi-function Button |

## Product Details

- **Brand:** ELECOM
- **Color:** Black Ball
- **Connectivity Technology:** 2.4GHz Wireless, USB
- **Movement Detection Technology:** Optical
- **Special Feature:** Ergonomic Design, Multi-function Button

## Images

![ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK - Image 1](https://m.media-amazon.com/images/I/51FZnjk4duL.jpg)
![ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK - Image 2](https://m.media-amazon.com/images/I/61A8pyj-ufL.jpg)
![ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK - Image 3](https://m.media-amazon.com/images/I/61M7c+I2OpL.jpg)
![ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK - Image 4](https://m.media-amazon.com/images/I/61N-sTFyiEL.jpg)
![ELECOM Wireless Trackball Mouse EX-G, Left-Handed, 6 Buttons, Tilt Wheel (Left and Right Scroll), Black M-XT4DRBK - Image 5](https://m.media-amazon.com/images/I/61bzcBekaEL.jpg)

## Questions & Answers

**Q: Do you have to use the trackball or will the cursor respond to mouse movement?**
A: If I understand you correctly. The mouse itself is stationary. This is a trackball mouse. The soul use of this is spinning the ball to move the cursor. I am unsure of any hybrid mice with the features you describe tho it made me wonder myself. You can always keep a regular one plugged in next to it.

**Q: Any right handers using it to relieve carpel tunnel and repetitive stress injuries in the right hand (by switching to the left)? If so, feedback??**
A: Been using the Logitech m570 on right hand + standard Logitech wireless mouse on left hand for years. It's helped a lot with wrist pain. Finally decided to try this Elecom left handed trackball as it doesn't seem like Logitech has any intention of making a left handed m570. Might get the right handed Elecom eventually as well.

**Q: what size batteries does it use ?**
A: AA battery × 1 required.

**Q: Will this mouse work with windows 10?**
A: Yes it works great with Windows 10 still having a problem right  scroll wheel 2 move across a row in Excel 2013 worksheet sheet. Very smooth Mouse

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by タ***マ on January 15, 2026*

初めてトラックボールマウスを使いましたが、想像以上に快適でした。 親指で操作するスクロール（ボール）は、最初こそ少し戸惑いますが、慣れるとページ送りや細かい移動がとてもスムーズで、通常のマウスよりも楽に操作できます。 マウス本体を動かす必要がないため、手首や腕への負担が少なく、長時間のPC作業でも疲れにくいのが特に良い点です。 デスクのスペースも取らず、狭い場所やソファなどでも問題なく使えるのは大きなメリットだと思います。 これからさらに使いこなしていけば、作業効率ももっと上がりそうなので、長く付き合えるマウスになりそうです。

### ⭐⭐⭐⭐ Review
*by A***ー on June 13, 2025*

長所は左利きに優しい形状。手首や指の負担が減ってありがたいです。 そしてボタンがたくさん。6つあるのでカスタマイズして楽しめますね。 ボールがついててマウスを動かさずに、カーソルを前後左右に動かせます。机が狭い場合には助かります。 短所は小柄な人には大きくて、ちょっと使いづらいかも。使えないことはありませんが、私は慣れるまで少しかかりました。 私は身長152cmで手は中指から手首まで17cmくらいです。写真はロジクールの小型キーボードk3800wとそれとセットのマウスと比べてみました。 使ってみた感想として、初期状態ではボールがツルツル過ぎて、カーソルが滑ります。これがかなりストレスです。カーソルの速度をHIGHからLOWに切り替えると少し良くなります。それでも滑ると感じたら、Windowsの設定→Bluetoothとデバイスの「マウスポインターの速度」も遅くするとカーソルがゆっくり動くようになります。 それからデバイスのMouseAssistant6が開かないというアクシデントが。アプリを削除して、もう一度ダウンロードからやり直しました。（このデバイスでどこを主ボタンにするかカスタマイズできますが、マウスの主ボタンはWindowsのBluetoothとデバイスのマウスの項目でも、左右どちらを主ボタンにするか決められるので、そろえておいた方が混乱しなくていいと思います）

### ⭐⭐⭐⭐⭐ Review
*by S***0 on January 11, 2026*

トラックボール好きな人にはいいと思います。 唯一の左手用なのもいい。

## Frequently Bought Together

- ELECOM EX-G Left Handed Trackball Mouse, 2.4 GHz USB Wireless, Ergonomic, Thumb Control, Tracking Roller Ball, 6 Programmable Buttons, Tilt Scroll
- ELECOM EX-G Trackball Mouse, 2.4GHz USB Wireless, Ergonomic Design, Thumb Control, Smooth Roller Ball, Optical Tracking, 6 Programmable Buttons, Tilt Scroll, Computer Mice for Laptop PC, Windows & Mac
- ELECOM Official Hard EVA Travel Protection Storage Case Replacement for M-XT2&3 Series, Wired/Wireless Thumb Control Trackball Mouse, Ergonomic Design, Optical Gaming Sensor - Case Only (BMA-XT2BK)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-01-23*