The Acer Capacitive Stylus for A500/W500/A100 Tablets is a stylus pen for the Acer A500, W500 and A100 capacitive touch-screen tablets. The device's duo-function design allows for use as either a stylus or a pen. Compact and lightweight, the stylus features a scratch-resistant rubber tip and reduces smudges. A refillable ink cartridge and compact case are included.