Compatible MaterialsMaterials can be engraved: Wood, bamboo, Paper, Leather, Rubber, Sponge Sheet, Comb, Purse, or other combustible plastic with a coating (such as phone case, mouse, pencil, name card, purse, plastic comb)Materials can't be engraved: Metals, Stone, Jewelry, Reflective Material, Silver, white paper (astigmatism, poor effect), materials that can't be burned or focused such as metal without any coating, light-transmissive plastic, plastics with added flame retardant materials.Portable and Strong Light DesignThe compact laser etcher can be taken anywhere and powered by power bank; supported file formats: JPG / BMP /PNG /G-code, Photo/Vector.Bluetooth Connection and App ControlWirelessly connecting with a smartphone, it can be controlled by the installing application and start 0.01mm accurate precision engraving.Durable and SafeThe laser etching machine has a high-quality laser head to make durability, better stability and long working time. With a working warning alert, motion-trigged stop, overheat shutdown, and password lock, it will keep you safe from accidents.