Compact, Yet Mighty The KiiBOOM Phantom 21 isn't just a keypad; it's a statement of efficiency and elegance. It's specifically designed for those who demand precision, flexibility, and style in one compact package. Tailored for Efficiency With 21 optimally placed keys, the Phantom 21 brings the power of a full-sized keyboard into a numeric-focused design. Experience an unhindered workflow, perfect for crunching numbers, data entry, and even gaming. Versatile Control Knob The multi-functional control knob is a game changer. Adjust volumes, zoom into details, scroll through documents, or customize it for any function you need. It’s tactile, intuitive, and seamlessly integrated. KiiBOOM Customization Dive deep with KiiBOOM's proprietary software. Assign complex macros, set up key remapping, and switch profiles. The power to tailor is in your hands. Premium Build Embrace a build quality that boasts durability and sophistication. The Phantom 21’s brushed metal finish and robust keys promise longevity while maintaining a sleek, modern aesthetic. Vibrant RGB Backlighting A symphony of colors awaits. With customizable effects, dynamic patterns, and a full spectrum of hues, the Phantom 21 isn’t just functional—it’s visually mesmerizing. Instant Connection Say goodbye to tedious setups. Plug in, play, and let the Phantom 21 elevate your computing experience instantly. Unparalleled Compatibility Fluent in multiple OS languages, the Phantom 21 flawlessly integrates with Windows, Mac, or Linux. For the Professionals Whether you're a financial guru, a coding maestro, or an enthusiast looking for streamlined input, the Phantom 21 is your indispensable ally. Travel Friendly Designed for portability without compromise. Its compact nature and protective design ensure the Phantom 21 remains pristine, from boardrooms to cafes. Specifications for KiiBOOM Crystal Switch Switch type: Linear Total Travel: 3.60±0.2mm Pre Travel: 1.6±0.4mm Actuation Force: 55±15gf Bottom Force: 60±15gf Stem Material: Nylon Housing Material: PC Specifications for KiiBOOM Pink Rose Switch Switch type: Linear Total Travel: 3.80±0.2mm Pre Travel: 1.6±0.4mm Actuation Force: 38±15gf Bottom Force: 42±15gf Stem Material: PC Housing Material: Translucent PC Specifications for KiiBOOM Jacaranda Switch Switch type: Linear Total Travel: 3.80±0.2mm Pre Travel: 1.6±0.4mm Actuation Force: 45±15gf Bottom Force: 55±15gf Stem Material: PC Housing Material: Translucent PC The correct way to charge the keyboard is to use the USB cable that comes with the keyboard to connect it to a computer to charge the keyboard. Do not connect it to a power source (such as a wall socket, power strip, mobile phone charger, power bank, etc.) to charge the keyboard.