Mk3

• Size: 88 x 51 x 9 mm
• Weight: approximately 30 grams
• Power: 40mA at 5 volts
• Connectors: MicroUSB and MicroSD slot
• Unofficial Volumetric 3D model [STP] by @TiKawamoto

Obsolete Versions

• Mk1 (had touch keypad) circa 2018
• Mk2 (had less memory than Mk3) circa 2019