First, there's an alternate aperture door with a PTFE surface, and second, there's a grip kit. The grip kit consists of a cloth wipe to clean the mouse, and a sheet of pre-cut grip tape.

The mouse otherwise appears to be the same as the original Haste 2 wireless: HyperX 26K optical sensor, lightweight 61g design, dual wireless connectivity, and PTFE mouse skates. HyperX says it ...