Compact programmable keypad with silent keys. Size 3.94 x 0.79 x 1.18 inches, designed for quickaccess custom key programming and lownoise operation. Integrated multifunction knob for efficient control. The builtin rotary knob enables seamless volume adjustment, page scrolling, or task switching to enhance workflow. Mechanical key switches for responsive input. Provides tactile feedback with fast response, suitable for long work sessions and precise input. Plugandplay USB connection with wide compatibility. Connects to desktop and laptop computers without drivers, making it a convenient extension for multidevice setups. Use scenarios Coding and programming: map debugging commands, code snippets, and frequent actions to dedicated keys to streamline workflows. Content creation and multimedia: control timeline navigation, zoom, and effects with macros and the rotary knob for efficient editing. Office work and study: quickly switch between documents, adjust volume during calls or media, and scroll through pages with minimal effort. This device delivers a compact, portable solution that combines keys, a versatile knob, and reliable input in a single, easytouse package.