1. 1-Key Customized Mechanical Keyboard, Hot-Swappable, Customized, Rgb Lights 2. Multi-Layer Superposition, Rgb Lights 3. Mechanical Shaft Body, Hot-Swappable, Custom Keys 4. Realize Complex Actions With One Click And Change Keys At Will. 5. Realize 2, 3-Key, 4-Key And Other Combination Shortcut Key Commands With One Click! Example: Key=Alt+Ctrl+Shift+Character Connection To Computer: Wired Interface: USB Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:White Material:Acrylic+PCB Package Contents: 1 x One-Button Keyboard 1 x Connecting Cable 1 x Shaft Puller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.