One click for complex movements: One-click password, one-click open file, folder Copy/paste, multimedia control... Supports full key hot-swapping: Full key shaft is freely replaceable, Meet needs of discerning hand feeling. Compatible with awide range of system devices: For cell phones, tablets, laptops, desktop computers, Compatible with for , for , for Android Driver-free use: Works without driver installation. Full key RGB lighting: Full RGB light beads, USB-C connection required. Product Name:Customized mechanical keypad Product Size:136mmx120mmx37.5mm Keyboard shaft: dust-proof red shaft Connection:USB-C cable/Bluetooth 5.0/2.4G receiver Color:A:Black Material:Acrylic Package Contents: 1 * Macro programming keyboard 1 * Data line 1 * Receiver Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.