A fully wireless split keyboard with a trackball under each thumb. No more reaching for a mouse. Scroll and pan with one hand, point and click with the other.

Why Dual Trackballs?

Most trackball keyboards give you one. We give you two, with G5 precision silicon nitride static bearings for smooth, reliable tracking on both sides. Your hands stay on the keyboard. Always.

Ergonomic by Design

• Split modules sit at shoulder width to eliminate ulnar deviation
• Built-in tenting reduces forearm pronation and encourages natural posture
• Columnar stagger matches your fingers' natural movement, no awkward stretching
• Dedicated thumb clusters handle Enter, Space, Backspace, and modifiers, taking pressure off overworked pinkies
• Compact layout cuts down on overreach by removing unnecessary rows

Built for Customization

• Hot-swappable Kailh Choc V1 sockets let you test and swap switches without soldering
• Fully programmable via ZMK Studio with custom layers, macros, combos, tap-dance, and more
• Open-source design so you can modify, extend, or print your own case

What's Included

Core Components

• 2× Matrix PCBs (resistors pre-soldered)
• 2× Thumb PCBs (all SMD components pre-soldered)
• 2× Trackball sensor assemblies (fully assembled)
• 2× 34mm Perixx Precision Trackballs (Red)
• 6× G5 Precision Silicon Nitride Static Bearings
• 2× 550mAh Li-Po batteries

Hardware

• Kailh Choc V1 hot-swap sockets
• 24× M3 heat-set inserts
• 24× Stainless steel M3 hex fasteners
• 2× 15cm FFC ribbons

Optional Add-ons

• 2× ProMicro NRF52840 MCUs
• 2× 128×32 I²C OLED displays

Assembly Options

Pre-Built: Ships fully assembled. Add your own Kailh Choc V1 switches and keycaps.
Lead time: 4 to 5 weeks

Kit: Hot-swap sockets, OLEDs, and microcontrollers require soldering. Everything else is ready.
Lead time: 3 to 4 weeks

Switches and keycaps not included. Use any Kailh Choc V1 compatible switches.

Community Support

Questions? Our Discord community is active, helpful, and happy to assist with builds, firmware, and keymaps.