The H2H is an aftermarket case designed specifically for the HHKB Pro 3 keyboard, created by keyboard enthusiast Hannn. Drawing inspiration from the HHKB Studio, the H2H aims to maintain the essence of the HHKB while offering a stylish aesthetic. The design features a two-tone color scheme, a unique side profile with curved elements, and a bevel cut at the bottom for added visual appeal. 

Key specifications include dimensions of 310.82mm x 130.05mm, with a front height of 18.50mm and a back height of 34.60mm, providing an 8° typing angle. The case is made from aluminum and PC, with a stainless steel plate for durability. It supports various PCBs including HHKB Classic and HHKB Hybrid and comes with essential components like feet, screws, and a carrying case. Color options include anodized finishes in black, silver, burgundy, and navy, all paired with a grey base.