This site is a scam and is doing a great job hiding it. The "light" they send you is a thin piece of plastic, essentially just garbage. The instructions they include are pointless because its nonsensical gibberish. They advertise a return policy but when you request a refund they won't return emails. When I finally contacted them via Facebook they asked me to send them a video of it not working, right after I did they informed me it's now considered used because it's out of the package then went back to ignoring me. They delete all negative reviews on the website and deleted all my negative feedback on Facebook then blocked me from commenting on the business page. Terrible company, terrible customer service, terrible product.