[RechargeableIntelligent Power-off]-Our engraver tool for metal is rechargeable,come with USB cable.The micro engraver pen is built-in safety protection circuit board and intelligent overload protection chip.When the working resistance is too large,it will automatically cut off the power to prevent from damaging the engraving pen.Really safe to use. [Low Noise and Portable]-This electric engraver is low noise when it works.No need to worry about it will affect the familys rest.The body of our etcher engraver tool is light and small.You can carry it everywhere.Super easy to use and is perfect for both beginners or professionals.This is a portable engraving tool that lets you customize everyday objects to create one-of-a-kind,personalized accessories and gifts. [Wide Applications]-Our electric engraver works with precision and comfort on nearly any surface, including glass,metal,wood,plastic,leather,jewelry and much more Endless applications included engraving tools,sporting goods,toys,phone chargers and the delicate jewelry,watches and glassware.Also practical as a wood engraver or part of a metal engraving kit