【Two Light Modes】Steady-on mode and upgraded flickering pulse mode. All red & infrared lights will stay on in Steady-on mode while lights will flickering 600 times per minutes to generate 10HZ pulse rate energy in pulse mode. Newly designed pulse mode can penetrate deeper into your skin and provides stronger effect on pain relief enhancing results on cellular repair metabolism cell viability and regenerative capacity. 【Red & Near Infrared Dual Therapy】Total 216pcs red 660nm and 108pcs near-infrared 880nm lights featuring our SMD newest lighting tech that two red lights and one infrared light are combined together in one bulb making this dual light therapy belt more targeting effective and powerful on relieving your pain and fatigue. 【Comfortable & Easy to Use】Comes with 20 minutes auto off timer two modes can be easily switched. Surface is flat and soft. Buckle straps can be adjusted from 14” to 51” fits for most body sizes. Easily hand-free operation for office or home use. 15 Ft power cord is long enough in range of your activity. 【Flexible & Powerful】Can easily wrap your waist back shoulder neck elbows arms thighs knee cap and any parts that needs to relief. 13.8”×8“ large area with powerful light combo. Red light therapy works by increasing energy production reducing pain and speeding healing IR light is deeply penetrating and cause thermal effects to increase tissue temperature promote blood circulation great for sport injuries neck and shoulder stiffness sore back muscle pain and tissue repair.