Compact & LightweightThe AKB-601UB only weighs a quarter of a pound and is less than three and a half inches wide which makes it extremely portable and space saving.Spill ResistantThe keypad™s spill resistant design helps to prevent fluids from staying inside, which would otherwise cause damage to the keypad.Quiet Membrane Key SwitchesMembrane key switches provide a quieter typing experience with lifecycle lasting up to five million keystrokes.Plug & PlayThe AKB-601UB requires no driver. Simply connect the device to your computer and begin enjoying your new peripheral companion.