1．The smallest micro-DVR in the world，hiding in the pen！The micro-DVR with video and audio functions，is the first one in the world with such functions! 2．With high sensitive microphone，you can record all the sounds clearly within 15 square meters；High clarity video effect，can supply the powerful evidence for the police. 3．Fine appearance, fluent writing function, exchangeable pen lead, durable and environmental. 4．Can match any PC and other electronic machines, which with USB interface jack. 5．No need drive，no need external electrical power. 6．Support WINDOWS98/98SE/ME/2000/XP/MAS OS/ LINUX and identify the operation system automatically, set up the corresponding drive program without manual setup (without WINDOWS98) 7．The record format is CIF, 352*288 AVI format