【SMALL SIZE. POWERFUL LASER】Its 3000mW laser power makes it faster and more powerful than other portable engravers. It makes engraving on harder surfaces a breeze! Engraving materials include: cardboard, wood, leather, cloth, bamboo, plastic, acrylic, cut paper or other flammable materials (such as mobile phone cases, mice, business cards, wallets, glass must be spray paint etc.). Note: stainless steel, metal, glass, crystal and transparent or translucent stuff can not be engraved. 【SIMPLE…