The upgraded model features SMD technology with a 3 in 1 flat LED lights combo, consisting of 432 pcs of 660nm red lights and 216 pcs of 880nm near-infrared lights. The extra-large pad has 216 LED lights and is designed to cover larger areas like the back, neck, shoulder, and hip. Made from thick but lightweight microplush fibers, it provides comfort during use. The one-piece design with velcro straps allows for a hands-free fit, making it ideal for home or office use. The device operates with an auto shut-off after 20 minutes and can be used multiple times daily, suitable for all skin types. It includes a long 15-foot power cord, convenient for various activities.