Feature 1Programmable Function: This mini keyboard is programmable, designed with knob. Allowing you to freely configure keys and functions, improve work efficiency and comfort. 2Dual Mode: This programmable keypad can be easily connected via USB cable or wireless BT, widely compatible with a variety of devices. 3Red Switch: This gaming keypad adopts mechanical structure and red switch, which ensures quicker response and longer service life. 4Ergonomic Design: This mini mechanical keypad also features ergonomic design which provides easier and more comfortable typing. 5Durable Acrylic: This one handed keypad with knob is made of premium acrylic material, which is strong, durable and resistant to wear.Item Type: Mini KeypadMaterial: AcrylicConnection: Wired USB/ Wireless BTKey Type: Red Switch Mechanical Keyboard (Knob Can Be Pressed and Used As Programmable Key)Supported Operating System: SuitableforWin,forVista,forLinux,forOSXLaptop.Battery Type: Inbuilt 800mAh Lithium Ion Battery .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Mini Keypad1 x USB Cable