1. Low temperature design, can paint on the skin, not hot 2. Wireless operation, easy to use 3. Intelligent voice broadcast, simpler prompt operation and easier drawing 4. Built-in 700 mAh lithium battery, 45-60 minutes long battery life 5. PCL environmentally friendly material, 1.75 mm in diameter 6. Voltage: 5V 7. Current: 0.5A 8. Power (max): 2.5W 9. Product size: 155 x 39 x 35mm