The Adesso USB Numeric Keypad offers a compact and lightweight design, making it easy to carry wherever you go. Its membrane key switches deliver a quiet typing experience and are built to last up to five million keystrokes. Most importantly, this 18-key keypad is spill resistant, featuring a casing designed to let liquids drain out, protecting your device from accidental spills. With this keypad, you can work confidently without worrying about damage from unexpected drink mishaps.