Features: Experience seamless connectivity with this 21key 3 mode (Bluetooth-compatible/wire/wireless) mechanical numeric keypad featuring switches, customizable RGBs backlighting for space saving efficiency. Engineered with ABS materials and 21 programmable shortcut keys, this wireless numeric keypad delivers tactiles feedbacks through mechanical switches while offering weeks of battery lifes and multiple RGBs lighting modes. for programmers, accountants, and mobile professional seeking portable productivity tool, this mechanical keypad enhances workflow efficiency across systems. Perfectly adapts to cramped office desks, gaming setups, or travel kits with its palm sized footprint, providing quick access to numeric inputs and multimedia controls during extended work or late night computing. The spill resistant construction and 50million keystroke rate mechanical switches ensures long reliability, while the detachable USB C cable maintains clutterfree operations as both wire keyboard and charging solution. Specifications: Materials: ABS. Size: 133.4x87.6x41.6mm Colors: Black Red, Blue, Black, Purplee(optional) Connection methods: 2.40G wireless, Bluetooth-compatible 5.0 wire Keys: 21keys Applicable model: general purpose Backlight effect: 16.8million color RGBs Battery capacity: 1000mAh Axises seat: Hot-swap shaft seat Package Includes: 1PC 21Key Mechanical Numpad note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.