Bitra Thumb Trackball
Description:
Bitra is ELECOM's compact, silent trackball, built for people who move between home and office. A physical switch on top toggles between Bluetooth LE and USB 2.4GHz wireless, pairing with one device on each connection and flipping between them without re-pairing. A 25mm ball sits under the thumb, with the scroll wheel tilted 16 degrees to match the hand's natural angle.
About 30% smaller than ELECOM's previous trackball generation, Bitra uses silent switches on every button and stores its receiver inside the body. It comes with a shock-absorbing storage pouch built to hold a spare battery too.
Two Wireless Modes, One Switch
Bluetooth LE and USB 2.4GHz, toggled instantly with a switch on top. No re-pairing required.
Silent by Design
Every button clicks without a sound.
Built for the Thumb
A 25mm ball and a scroll wheel tilted to match your hand's angle.
Small Enough to Carry Anywhere
About 30% smaller than the previous generation, with a storage pouch included.
Model number: M-MT1MRSABK
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Supports All Connection Methods
The unit features a switch on the top for switching between Bluetooth® and 2.4GHz wireless connections, allowing for seamless operation of two devices. This enables stress-free work in multiple environments, such as home and the office.
Technical Specifications
Connection: Bluetooth LE + USB 2.4GHz, physical switch, receiver connects via USB-A
Compatible Devices: Windows, macOS, ChromeOS, Android, iOS, iPadOS
Connection Switching: 1 device via USB 2.4GHz + 1 device via Bluetooth
Ball: 1.0 in diameter (25mm), Artificial Ruby support
Sensor / DPI: IR LED, 750 DPI
Buttons: 5, silent switches on all
Power: 1x AAA battery, approx. 5 months (alkaline, estimated)
Wireless Range: approx. 33 ft (10m), varies by environment
Dimensions: 2.9 in x 3.5 in x 1.6 in (W x D x H)
Weight: 2.7 oz (77g), excluding battery
Color: Black
Warranty: 1 Year
Good to Know
Connects to one device over Bluetooth and one over USB 2.4GHz at the same time, switch between them with the physical toggle instead of re-pairing.
Runs on a single AAA battery, not AA.
Replacement ball (M-B25SV, M-B25RD) sold separately.
Two Connections. One Flip.
A single switch on top moves between Bluetooth LE and USB 2.4GHz wireless, so home and office setups don't require a re-pair. Devices with Bluetooth Low Energy built in can connect directly, no receiver needed, useful on tablets and laptops with limited USB ports.
Built for the Thumb, Not Just Any Grip.
The 25mm ball sits naturally under the thumb, and the scroll wheel is tilted 16 degrees to match the hand's angle, letting it rotate more smoothly than a flat wheel would.
Small Enough to Forget It's There.
About 30% smaller than ELECOM's previous trackball generation, Bitra fits easily into a bag. The included shock-absorbing pouch holds the trackball itself and doubles as storage for a spare AAA battery.
Bitra MT1 Thumb Trackball FAQ
Find our answers to commonly asked product questions here.
It connects to one device over Bluetooth LE and one over USB 2.4GHz at the same time, and a physical switch toggles between them. It does not register three devices simultaneously the way IST PLUS does.
Yes. It supports Windows, macOS, ChromeOS, iOS, iPadOS, and Android over Bluetooth. USB 2.4GHz mode works with Windows, macOS, and ChromeOS.
No. Devices with Bluetooth Low Energy can connect directly. The receiver is only needed for the USB 2.4GHz connection, and it stores inside the trackball body when not in use.
One AAA battery, alkaline, manganese, or NiMH rechargeable. A full alkaline battery lasts approximately 5 months.
Yes. All 5 buttons remap through free ELECOM Mouse Assistant software.
Yes. It's removable through the back of the unit. Replacement balls (M-B25SV, M-B25RD) are sold separately.