High-Efficiency SFX 30W Fiber Laser Engraver.This Handheld Fiber Laser Engraver Delivers Exceptional Precision. Laser Level: Class 4. Output Power: 0.874mw.Marking Speed:<7000mm/S.Line Width:0.03mm. Repeat Positioning Accuracy:0.01mm.SFX Laser Marking Machine is Perfect For High-Speed,Accurate Engraving on Both Metal And Non-Metal Materials.The Portability,Coupled With a Dual Power Supply System (110V/220V Plug-In Or Rechargeable Lithium Battery)