ASUS Eee Pad Transformer Prime Stylus Pen, BoxWave [Bullet Capacitive Stylus] Mini Stylus Pen with Keyring Loop for ASUS Eee Pad Transformer Prime - Metallic Silver Compatible with all capacitive touchscreens Ultra lightweight yet durable construction Integrated key chain design for ultimate portability Twist-off connector allows you to easily remove the stylus to use Helps prevent fingerprints and smudges