Features 1、The functions of local treatment, mixed light of 630nm, 660nm and 850nm, 5 minutes timer and non flicker can be supported by the physiotherapy lamp to improve your health. 2、As a phototherapy device based on photochemical effect and hot compress treatment mechanism, it has a leading role of anti inflammatory and swelling. 3、Red light therapy lamp is suitable for back, neck, shoulders, knees, hands. Helps improve joint, back pain, muscle fatigue and soreness to relieve pain and reduce inflammation. 4、You can use the therapy flashlight 3 times a day, 5 minutes each time, directly irradiating the skin, joints or muscles,which is easy to use. 5、With s built in 1200mah polymer lithium battery, the service life of the therapy lamp can be up to 20,000 hours and is safe and effective. You can use it with confidence. Specifications Item Type: Physiotherapy Lamp Material: Aluminum Alloy Power: 9W Weight: Approx. 296g / 10.4oz Product Size: Approx. 14x2.9x2.9cm / 5.5x1.1x1.1in Light Wavelength: 630nm +660nm+850nm Power Supply: 1 x 1200mah 18650 Polymer Lithium Battery (Battery Included) Charging Method: USB (Type-C) Service Life: 20000 hours (long-term repeated use has a good health impact on human health) Principles of Phototherapy: The device physically emits a light band with a wavelength of 630nm/660nm/850nm (the same as the light band of He Ne light), using red light to penetrate the human body and produce the optical effect of the red light band (ie: after red light is irradiated, Mitochondrial catalase activity increases, promote cell metabolism and protein synthesis, promote local blood circulation, control infection, and increase. Applicability: 1. For soft tissue injuries, burns, stab wounds, other wounds and post-operative wounds, 2-3 times per day, 7 days as a course of treatment, 15-30 minutes/time. 2. For arthritis, periarthritis of shoulder, lumbar muscle strain, prostatitis, cervical spondylosis, 2-3 times/day, 15 days. Package List 1 x Physiotherapy Flashlight 1 x Manual 1 x USB Cable 1 x Storage Bag