Wacom Bamboo Pen (EP150E) It lets you to comfortably control up to four functions (including zoom, scroll, brush size and canvas rotation) in each of your software applications. All 16 ExpressKeys are customizable, giving you handy access to application-specific keyboard shortcuts and modifiers. Two rear-mounted, finger-sensitive Touch Strips, along with two Touch Strip Toggle buttons speed your workflow The Show Settings key displays your current key settings on-screen. Accessory, bamboo pen, requires.