8-in-1 tech tool pen with light torch, ruler, invisible ink pen, ballpoint pen, stylus and a mini flat-head. The tech tool pen comes with 8 very handy functions: LED torch for money detector, ruler (inch and cm), invisible ink pen, ballpoint pen, stylus and a mini flat-head and Phillips screwdriver. Twist action pen, write fluently, durable, smart and portable Unique design, a valuable pen you worth having for your life and work.
