The K840 mechanical keyboard features a solid aluminum build with expertly engineered Romer-G mechanical switches. Enjoy an elevated typing experience with distinct tactile feedback and quiet operation with every stroke. Designed to fit your productive environment at home or in the office.The K840 top case is made of solid anodized aluminum. Its durable construction is designed to tackle demanding projects. A sand-blasted textured finish gives it a modern look that fits your workspace.