Wacom Intuos3 Airbrush - digital pen ( ZP400E ) Pressure-sensitive pen tip - Very fine transitions and shadings are no problem thanks to the 1,024 pressure levels of the pen tip. The Intuos3 Airbrush delivers fine fingertip control, with a minimum activation pressure Finger wheel - 1,024 levels without lifting a finger. And it stays in the position it was in last, meaning the quantity of digital ink stays constant Programmable side switch - Application specific and individually programmable, from the simulation of all the soft buttons to shortcuts, pop-up menus Tilt sensitive - The Intuos3 Airbrush recognizes tilt angles of up to 60 , important for realistic paintbrush simulation Tool ID - Customize your pens with Tool ID, each Intuos3 input device can be individually programmed and configured for each application