Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet. It's located in the Kuiper Belt.~ NASA

Misson to Pluto 

The presentation of the keycaps is based on noble and luxurious deep red with mysterious dark gray, and is embellished with pink, which represents love and peace, on the black shell. The appearance is a classic thin frame, the bottom is a three-way outlet design, and the internal metal positioning plate /Silicon sound insulation layer/PCB/sound insulation cotton, multi-layer overlapping structure

More Info 

https://www.moonparadise.net/pluto-vx80