If you have problems with your knees and elbows consider using red and infrared light products which according to science can be very effective! Home Use: Enjoy the benefits of red light and infrared light instantly at home! Easy Use: Simple connection detailed instructions in the manual. Easy Carry: The product is lightweight and can fit in your knee and elbow 20min Automatic controller prevents use it too long. Safe Use: No side effects insist on using it for 3-4 weeks there are obvious results. Sorft Use: Relax your body 15inch long DC cord enough for the actice range. Perfect Gift: You can give it to your loved ones friends relatives and people around you! Specification: Light Beads: 120pcs red lights + 60pcs IR lights Material: 75% Neoprene + 25% Velvet Wavelength: 660nm + 880nm Light Beads Craft: DIP Bulb Temperature: Max 104℉ Frequency:50/60Hz Light Beads Craft: SMD Bulb Packing List: LED Light Pad ×1 DC Cord ×1 Timer Controller ×1 Power Adapter ×1 Synopsis ×1 Extended Velcro ×2 Note: Color difference between the real object and the picture is normal. If you have any quetions you can contact us! 2-5Fast delivery Free lifetime replacement parts 1 year warranty!