Using this unicorn 6 - click multi - pen is super easy. Just click the top of the pen to switch between the 6 different colors. Whether you're taking notes, making to - do lists, or coloring in a planner, it's a great tool. As for care, keep it away from extreme heat and moisture to ensure the ink flows smoothly. If it stops writing, try clicking a few times to get the ink moving again. And remember, you'll get 1 random pen per order, so enjoy the surprise!