1. Programmable Keyboard: All keys are programmable. Set any standard Windows keyboard function, and achieve complex shortcut combinations with a single key. 2. Mini Size: Effectively saves desk space. Detachable USB cable. Connect one keyboard (plug and play) and another keyboard simultaneously on the same computer without interference. 3. Wide Range of Applications: Suitable for offices, gaming, music, media, industrial control, laboratories, production line testing, and more. An excellent aid for designers, video editors, and many other users. 4. Type-C to USB Interface: No driver required, plug and play. Customizable buttons can be set according to customer requirements. Customers can provide setting content to customer service, or design it themselves. We provide setting software, video tutorials, and remote technical support. 5. Mechanical Keys: Durable mechanical keys. Supports ergonomic design and hot-swapping. 6. Supported Operating Systems: Windows/Vista/Linux. 7. RGB Lighting: Choose from three modes: solid color, scrolling text, or off. You can request customer service to set it up or specify your preference. Keys: 4 Button: No button in 4 keys Power and Voltage: DC 5V/1A Interface: Type-C Switch: Outemu Red Switch Product Size: 100 x 35 x 30 mm / 3.94 x 1.38 x 1.18 inches Product Weight: 58-68 grams Note: The 4-key keyboard does not have a volume knob. Operation Style: Mechanical Language: English Type: Wired Application: Laptop Keyboard Standard: Mini Keyboard Interface Type: USB Color: Black Material: Acrylic Package Contents: 1 x Custom Keyboard, 1 x USB Cable. (Other products are not included). Note: Light reflection and different displays may cause the color of the item in the image to differ slightly from the real item. The allowed measurement error is +/- 1-3 cm.