To charge your Nuwa Pen, you lay it in the case. If the Nuwa Pen is not fully charged, the light will turn amber when it lays inside the case. The light will turn off after a few seconds. This is how you’ll know your Nuwa Pen is charging. Additionally, you can monitor the charge of the Nuwa Pen in your app, since after a few minutes you’ll notice the charge goes up.

To charge your Nuwa Pen case, you plug it into a wall socket with a USB-C cable. The indicator light on the side turns red if the case is charging, but not fully charged. The indicator light will turn white when the case is fully charged.

Here’s a video that shows you the above.