How can I tell when my 3Doodler Start+ pen is fully charged?

[London]

Knowing when your 3Doodler Start+ Essentials 3D Printing Pen Set is fully charged is essential for uninterrupted 3D printing fun. The pen's LED light indicator is your guide. When the battery is low, the LED flashes slowly in orange. To charge your 3Doodler Start+ pen: First, turn it off using the power switch. Then, connect it to a power source using the included micro USB cable. While charging, the LED will rapidly flash orange. Once fully charged, the LED light will change to a solid orange, indicating it's ready for your next creative project.