Question

Can I use the device on a wet surface?

Answer

Yes, of course.

Question

What wavelength of red light does it use?

Answer

It uses 630-670nm.

Question

How do you charge it?

Answer

A USB Type C cable is included.

Question

Can I use it on my face?

Answer

We do not recommend using it on the face. A better alternative would be to use it on arms, legs, back, chest, feet and hands.