Doctor-Recommended & used by Health Professionals – This LED therapy utilizes the state of the art technology used on Pro Athletes by today's leading Doctors, Physical Therapists and Trainers. It’s been tested in the real life by several athletes and the aged. Now you can successfully apply to ease painful joints and muscles at home for a fraction of the cost. Tested in the real life by several athletes and the aged. Red Light Device - Designed for pain relief, injury recovery and muscle relaxation, work with auto shut-off for 20minutes, a time controller is also ready for cusomizing use. This device can be used multiple times per day, and it is safe for all skin types. 3-7 days delivery & 1 Year full warranty on the whole product. LIFETIME FREE REPLACEMENT on charger, controller and connectors! buy this equipment and experience painless, safe, and natural physical pain relief solution. Auto shut-off timer(20 minutes), do not exceed 40 minutes of use in one therapy session, cool your body and have some water before next applying. Wide voltage AC 100 - 240 V, DC 12 V. Apply pain relief when you are on business trip. 15 Ft power cord is long enough in the range of your activity. [10.6 inch x 7.4 inch x 2.3 inch] Double-sided Pad design, 88pcs 660nm red lights and 88pcs 880nm infrared lights evenly distributed around the hand. The large internal space is suitable for most people's sizes.