ELECOM DEFT 2.4GHz Wired Finger-Operated Trackball Mouse, 8-Button Function with Smooth Tracking, Optical Gaming Sensor, Ergonomic Design, Rollerball, Compatible with Windows / Mac (M-DT2URBK)
From the brand

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ELECOM is a Japanese consumer goods company with a simple mission: create quality products that deliver the most comfort and convenience for its customers. With a track record boasting some of the most innovative yet accessible products ever created, ELECOM has consistently raised the standards of excellence for technology products while taking care of its customers and employees.
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Product Description
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HUGE | DEFT | DEFT PRO | bitra | Riracon | Dr. EX-G | |
Trackball | ✓ | ✓ | ✓ | ✓ | ||
Advanced Optical Tracking | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Connection | USB 2.4GHz / Wired | USB 2.4GHz / Wired | USB 2.4GHz + Wired + Bluetooth | USB 2.4GHz / Bluetooth | USB 2.4GHz / Bluetooth | USB 2.4GHz / Wired / Bluetooth |
Customizable buttons | 8 | 8 | 8 | 5 | 10 | 5 |
DPI | 500/1000/1500 | 750/1500 | 500/1000/1500 | 750/1500 | 500/1000/1500 | 600/1200 |
Length | 4.5" | 3.7" | 4.3" | 2.9" | 1.6" | 3.2" |
Width | 7.2" | 4.9" | 5.3" | 3.5" | 4.4" | 4.7" |
Height | 2.3" | 1.9" | 1.9" | 1.6" | 2.2" | 1.7" |



Specification
- Wired Connection
- ELECOM Mouse Assistance software
- Windows Vista,7,8.1,RT8.1,10 (Horizontal scroll doesn't work for Windows RT8.1), macOS 10.10 later
- DPI: 750/1500 count
- 8 Buttons with Tilt Wheel
- Low Energy Mode / High Speed Mode
- Size: W3.7"(94.7mm) X L4.9"(124.4mm) X H1.9"(47.9mm)
- Weight: 112g/ 4oz
ELECOM Wired Finger-Operated Trackball Mouse "DEFT" (M-DT1DRBK)
-The ELECOM "DEFT" trackball provides precise cursor movement for superior accuracy. Help improving productivity and efficiency of your work.
-Optical Tracking Technology : Optical Sensor can read your accurate movement.
-Control and Do More with the functional 8 customizable button.
-DPI can be switched to 2 different speed.
-Support Windows and Mac OS. Check details
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Functional 8 ButtonsAssign different functions to fit your work or gaming needs with 8 built-in mouse keys and a left/right scrolling tilt wheel that provides limitless clicking combinations. |
Customizable ButtonsYou can assign favorite function to each button by using "ELECOM Mouse Assistant" ELECOM Mouse Assistant Software will be available to download from ELECOM NET website. Recommend for PC Gaming Control: Customize each button function to enhance your gaming experience. |
DPI SwitchThe cursor movement speed can be switched to two levels; 750/1500 counts. Get your computer set just the way you like. |
Synthetic Ruby Support BearingsEach trackball is fitted with large (2.5mm) synthetic ruby bearings to provide effortless glide and smoothness for precision operation. The large bearing size also requires less maintenance because it better resists dirt and grime. |
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Maintenance : Easy to CleanPush the ball out from behind with your finger or a pen. Remove dust from the areas where the three red support balls contact the trackball using a cotton swab. As dirt and grime builds up around the trackball, the mouse cursor may jerk around the screen erratically or refuse to move at all. Keep your trackball clean all the time. |
Without worrying about Battery LifeFor USB WIRED connection type trackball mouse. Carry with you and don't need to worry about the battery life. Simply connect to your PC. |
Power Off When You Don't Need ItPower button is in the backside of the mouse. Prevents battery consumption when not in use. Low Energy Mode : Battery will last longer. Low energy consumption. High Speed Mode : Sensor will track accurate movement but the battery will run out faster than low energy mode. |
About ELECOMELECOM has a wide variety of product categories, including PC-related products, audio visual device-related products, digital equipment-related products, exercise-related products and more We set out to create new markets with the concept of a “Human interface: Connecting users to devices with more comfort and better usability that are more friendly and comfortable for you and your family”. |

HOW TO CUSTOMIZE ELECOM MOUSE BUTTONS?
With "Mouse Assistant" you are enable to assign mouse buttons to any functions as you like to customize your mouse.
- Access to ELECOMUS dot com to download "Mouse Assistant".
- Click "Mouse Assistant" from the top menu.
- Select either Windows or MacOS version.
- Select "Download" tab and click the zip file to download and proceed to install "Mouse Assistant". For more information, please click "How To Install" tab.
- After the installation, restart your computer.
Product Quick Look
- ✅《COMFORTABLE DESIGN》The mouse design is based on 6 different muscle and skeletal structures of the hands giving special emphasis to the folding actions of the hands to provide a new level of hand comfort.
- ✅《OPTICAL TRACKING TECHNOLOGY》The ELEOM "EX-G series" trackball provides precise cursor movement for superior accuracy so you can get where you want on the screen quickly with less hand movement, improving productivity and efficiency. It is very easy to move in any direction.
- ✅《FUNCTIONAL 8 BUTTONS》You can assign favorite function to each button by using "ELECOM Mouse Assistant" ELECOM Mouse Assistant Software will be available to download from ELECOM NET website.
- ✅《DPI CURSOR》Designed with a high-performance gaming optics system sensor and lens. The DPI button can easily change between 750(LOW) and 1500(HIGH) DPI, making the movements of your cursor faster or slower. The ball is held in place by the ball bearings, but can easily be popped out of the device, by pushing it through the hole in the bottom and it can be easily cleaned.
- ✅《PRODUCT DETAILS》System requirements: Windows 7, Windows 8.1, Windows RT8.1, Windows 10 or later (Horizontal scrolling function is not working in Windows RT8.1), macOS 10.10 or later, Size: W3.7"(94.7mm) X L4.9"(124.4mm) X H1.9"(47.9mm), Weight: 4oz(without battery), DPI: 750/1500 count (switchable), Connectivity: wired
Brand | ELECOM |
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Series | ELECOM |
Item model number | M-DT2URBK |
Operating System | Windows 8.1, Windows 7, Windows 10 |
Item Weight | 7 ounces |
Product Dimensions | 4.9 x 3.73 x 1.88 inches |
Item Dimensions LxWxH | 4.9 x 3.73 x 1.88 inches |
Color | Black Ball |
Power Source | Battery Powered |
Voltage | 5 Volts |
Batteries | 2 AAA batteries required. |
Manufacturer | Elecom Japan (PC) |
Country of Origin | China |
Is Discontinued By Manufacturer | No |
Date First Available | November 6, 2015 |