Rejuven Light 2.0 Nano LED Light Therapy with 4 Interchangeable Heads. Anti-Aging Device, New open Box. This LED device includes 4 different bright LED heads that can be set to constant on, or choose between two different pulsed speeds. The 4 interchangeable heads a super easy to swap out and are in the following colors: Red 625 nm Amber 592 nm Blue 465 nm Green 525 nm The kit also includes goggles with their own little case, the power cord, and a stand. This device needs to be plugged in to use it, as it is not rechargeable, which is wonderful because there isn’t a battery that could get weaker over time. It can be used as a handheld light therapy wand by plugging the power cord directly into the bottom of the wand, or you can plug the power cord into the stand and place it on a table for a hands free option. Comes with instruction booklet as well as a beautiful satin lined box to store everything. I used this less than 10 times and it is still in perfect working condition.