How do I know if the Morph is charging? How do I know if it's low on battery or fully charged? – Sensel Morph Frequently Asked Questions

The Morph will charge whenever plugged into a USB that provides power. We recommend using a computer USB port because wall chargers tend to vary in quality/characteristics.

You can see whether the Morph has a charged battery or a low battery by pressing the button once. The battery level is indicated by the fullness of the LED strip.