1.sign pen 2.Compatible with any touch screen 3.Soft head for protecting your touch screen. 4.Clip design,easy to carry Capacitive touch pen: 1.sign pen2.Compatible with any touch screen3.Soft head for protecting your touch screen. 4.Clip design,easy to carryfor mobile phone, PDA, iPod Touch 3g, iPhone 3Gs, Blackberry, Plam Pre, Nokia, Samsung, HTC, Apple iPad ,et.