DGYAO Wireless 660nm Red + 850nm Near Infrared Light Pad is specially designed for neck and shoulders! This LED light therap device utilizes five ultra-strong magnetic suction points for batteries attached the light pad which are not easy to fall off LCD screen simple and easy-to-use interface and upgraded with new features: separate red and infrared light adjustable temperature pulse mode light intensity setting and an automatic timer for 5-30 minutes. The red lights at 660nm possess the capability to deeply penetrate the skin layers stimulating cellular repair and improving circulation. Near infrared lights at 850nm can effectively sooth shoulder and knee pa-in by penetrating deeper into joints and muscles. The infrared light systems heats up quickly without burning the skin utilizing the principle of combining red and infrared light to produce a thermal effect that accelerates blood circulation and achieves a certain degree of therap-eutic effect. This red light pad has a 1 year warranty free lifetime replacement parts! When you choose us you will find that you get what you pay for quality is the foundation and results are our specialty.