Feature:1. More Concentrated Energy: Strong penetration ability, suitable for physioTherapies in small areas and concentrated areas.2. Light Weight: Small size, easy to store and carry, can be easily put in your bag, suitable for travel.3. Near InfraInfrared Light: Can penetrate deep into the skin: directly the pain point, so as to relieve pain more effectively.4. Shorten Treatment Time: InfraInfrared light Therapies pain device is equipped with a 30 degree optical glass lens, which can increase irradiance of 120mW/cm at a distance of 1 inch, thereby improving efficacy of infraInfrared light Therapies.5. Wide Range Of Applications: Very helpful for leg joint pain, back, shoulder, finger, knee, foot and neck pain.Specification:Item Type: Portable InfraInfrared Therapies DeviceBuilt In Battery: Lithium Battery 2000mAHSize: Approx. 11.8 x 2.5cm/4.6 x 0.98inNote: 850NM is concealedto the eyeApplication Description: 1-1: Light physical Therapies effect through the method of physics, it emits 630nm, 660nm and 850nm light bands (in the same band as the He-Ne , deep penetration, Infrared light penetrates the human body and The optical effect of the Infrared light band (after the Infrared 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 infection.How to Use:Courseoftreatmentisgenerallytwotothreetimesaday,15‑30minuteseachtime.Thelightshouldbedirectedatthewoundasmuchaspossible.Thecloserthedistance,thebetter,anditwillendinonetofourdays.Package List:1 x Infrared Light PhysioTherapies