Specs.
Main Processor MCU: RISC 32 bit
Frequency: 240 MHZ
Flash memory: 2 MB
SRAM: 288 KB
PSRAM: 64M (for a powerful chess engine)

Main features

Powerful playing strenght of over 2,200 ELO
Strong magnetic chess pieces easy for standing
Clock Built-in-time + increment official tournament time controls
Replay famous games – Study historical matches from the greatest chess legends
Solve tactical puzzles – Improve your skills with hundreds of built-in challenges
Automatic move detection – Smart board recognizes each piece movement
Game Analysis Mode – Evaluate position and best move
Multi-level difficulty – From beginner to grand master
Comfortable size pieces king height: 2.35′

https://tabutronic.com/product/proelium/