The STD variant gets a 5-inch TFT display, while the RoadSync variant gets a 7-inch TFT unit enabled with Bluetooth connectivity, turn-by-turn navigation, music controls, and call & SMS alerts.

That TFT display measures 0.85″, and the battery is an 3.7 V 802025 Li-Po. [Maker M0] has also redesigned this to make it easier to print, and plans to support circular screens in the near future.