Portable Red Light Therapy Lamp Device, Portable Infrared Therapy Device Shorten Treatment Time Near Infrared Light for Muscle Relax for Pain Relief Specification: Item Type: Portable Infrared Therapy Device Built In Battery: Lithium Battery 2000mAH Size: Approx. 11.8 x 2.5cm/4.6 x 0.98in Note: 850NM is to the naked eye Application Description: 1-1: Light physical therapy effect through the method of physics, it emits 630nm, 660nm and 850nm light bands (in the same band as the He-Ne , deep penetration, red light penetrates the human body and The optical effect of the red light band (after the red color) increases the influence of light on mitochondrial catalase activity, enhances cell metabolism and protein synthesis, promotes local blood circulation, and controls the increase in . Package List: 1 x Red Light Physiotherapy Device 1 x USB Line 1 x Lanyard Note: Product will heat up during use, do not use continuously for more than 5 minutes