I believe you're asking about the , a now-discontinued open-source handheld computer.
The Pyra is arguably the most open device on the market. dragonbox pyra
DragonBox Pyra has the potential to revolutionize mathematics education by: I believe you're asking about the , a
: Depending on the model, it supports 4G/LTE, Wi-Fi, and Bluetooth, along with dedicated GPS for navigation. I believe you're asking about the