The Air version comes with OSA Profile Mac keycaps and the new Akko Air switches. 

​The model doesn’t come with Windows keycaps but can still work on Windows PC by switching to Windows mode per user manual.

Akko’s modified 1800 compact layout;
Top mount;
Multi-modes Beken plus chip (2.4G/Bluetooth 5.0/Type-C);
Akko Double-Shot TPU plate mount stabilizer;
5-pin Hotswappable;
RGB Backlit (programmable);
PBT OSA Profile Dye-Sublimation Mac keycaps;
Polycarbonate case;
Built-in 2.4G receiver slot;
Silicone case foam and switch pad.