Huion Battery Pen P68 Digital Pen Stylus for Huion Graphics Drawing Tablet Work with all Huion Pen Graphics Tablets except G10T, Q11K and all Huion pen displays. CANNOT work on Phone/PC/Computer/Screen/iPad/Wacom tablets 1 AAA Battery Needed before using. On/Off Button Design on the top of the pen. Two Pen Buttons can be customizable. Electromagnetic Digitizer Technology. 1 Year Warranty