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🌿 What surfaces can the SketchPro Engraving Pen work on?? 🎯 Is the pen suitable for beginners?? 👩‍ Does it come with accessories? 📱 How long does the battery last? 🤝 What is the LED light used for? 🧵 Can I adjust the engraving speed? 🎨 Is it safe to use? 🎁 What can I create with the SketchPro? 🔋 How do I charge the SketchPro Engraving Pen? 🤫 Is this engraving pen loud, and does it vibrate a lot?