Precautions for use Be mindful that if you use the provided pen having a load exceeding 2.five kg, scratches could come about around the protecting glass. If you utilize a ballpoint pen other than the provided pen, watch out the screen could be stained with ink or harmed. Page 9: https://edgaryglsx.thekatyblog.com/30507794/wm55-can-be-fun-for-anyone