100% Satisfaction Customer Service Please feel free to contact us whenever you meet quality problem, we provide 1 year warranty and lifetime customer service, guarantee 30 days return or refund. Well made with cooling & durable use Lamp material Aluminum with cooling fins, completely silent No noise or cooling fans, life Span 50,000+ hours. Red Light Therapy Benefits Designed to deliver infrared heat to the body. The infrared heat improves the blood flow & circulation of the target area, it may help skin, muscle issue and other parts of your body heal. 18pcs High powerful LED beads The red light therapy device has 18pcs high power LED in total. Bulb wavelengths 660nm-9pcs deep red and 850nm-9pcs near infrared which are NOT visible to the human. This gives the bulb it's powerful effects both in the deep red and near infrared spectrum. Upgraded Red Light Therapy This new devices light intensity is increased, we recommended to use an eye mask when using it on the face. Fit standard E26/E27 socket (not included), 100~240V AC, easy to set up and use.