The device is described as half the size of a credit card and has an ARM Cortex-M0 processor, accelerometer and magnetometer sensors, Bluetooth and USB connectivity, a display consisting of 25 LEDs, two programmable buttons, and can be powered by either USB or an external battery pack. The device inputs and outputs are through five-ring connectors that form part of a larger 25-pin edge connector. In October 2020, a physically nearly identical v2 board was released that features a Cortex-M4F microcontroller, with more memory and other new features.
