Darmoshark K3QMK Wired Mini Numeric Keypad Digital Mechanical Keyboard 21 Keys RGB Backlight Portable Design PBT Dual Colour Full Key Hot-Swappable Shaft Ergonomic design for Laptop Desktop, PC, Notebook Black Features: Key Line Separation Technology: The digital keypad adopts key line separation technology and Type-C connector design, making it convenient to carry and highly versatile, suitable for various devices. Ergonomic Design: The inclined keycap design that conforms to ergonomics allows the fingers to maintain a certain angle with the surface of the keycap, effectively relieving fatigue from long-term typing. Multi-scene Application: Whether playing games or in scenarios such as banks, supermarkets, schools, etc., this digital keypad can meet your daily use needs. Full Key Hot Swappable: The keyboard uses Huano purple axis, which is light and smooth. The stable axis supports the hot swapping of all keys, making it more flexible e. RGB Full Color Backlight: Built-in about 16 million color RGB full color backlight, a variety of lighting effects are available for selection, can be quickly switched, adding fun e. Driver Introduction: QMK and VIA are two open-source community projects that focus on writing keyboard firmware and modifying keyboard key settings, providing a flexible platform for keyboard customization. Specification: Material: PBT  Product Name: K3QMK Digital Mechanical Keyboard Number of keys: 21 keys  Keystroke life: 50 million cycles Keyboard Type: High keycap step design Operating Voltage: DC5V±5% Use maximum current: 300MA Connection method: Wired System requirements: WINXP/WIN7/WIN8/WIN 10/WIN11/MAC Product Size: 132*86*52mm Product Weight: 264G±10G Package Size: 17*15*5.6cm  Package Weight: 0.4KG Package list: 1* Keyboard 1* User manual 1* Charging cable