2520LEDs 660&850mm Infrared Red Light Therapy Pad Full Coverage Body Pain Relief. 1600700mm pads Large treatment area, Making treatment time dramatically shorter & total more than 2520 pcs medical red and deep penetrating infrared lights, penetrate deeply in the tissues. This drug free light therapy device shows no negative side effect on people.It helps speed up joint recovery and alleviates pain, great for sport injuries, arthritis, neuropathy, sprains, Carpal Tunnel Syndrome, neck and shoulder stiffness, sore back, muscle pain, inflammatory conditions, sciatica, tendonitis and tissue repair. LED quantity: 2520PCS (0.6W-LED chip). Input voltage: AC 100-240V Output voltage DC 12V 10A. Spectrum: 660:850mm (660nm:1008 3 crystals/piece, 850nm:2523 crystals/piece).