Feature: 1. REDUCE PAIN: Handheld red infrared light provides targeted pain reduction for joints, muscles, and arthritis. It effectively alleviates knee, shoulder, and back pain, making it easier to recover from sprains and falls. 2. PROMOTE HEALING: 650nm red LED light stimulates cellular energy metabolism and improves local blood circulation, making it beneficial for treating conditions like frostbite and varicose veins. It promotes cell regeneration and accelerates wound healing, making it suitable for skin injuries. 3. HIGH PENETRATION: Red infrared light has strong penetration power, making it ideal for focused treatment on small areas. The near infrared light can penetrate deep into the skin and reach the pain points more effectively, providing efficient pain reduction. 4. 5 LEVEL STRENGTH: Handheld infrared light offers 5 levels of power adjustment, allowing you to choose the level that suits your needs. 5. IMPROVE CIRCULATION: Red LED light helps stimulate collagen production, improving skin elasticity and reducing wrinkles and pigmentation. It not only provides pain reduction but also enhances the overall quality of your skin. Specification: Item Type: Handheld Infrared Light Material: ABS Battery Type: Lithium ion Battery Battery Capacity: 180mAh (Built in) Knee Joint: Swelling, Numbness, Weakness Neck Pain: Headaches, Neck Pain Back and Leg Pain: Feeling pain when climbing stairs or moving is inconvenient Rheumatic Pain: When you suffer from unbearable pain and repeated torment. . Package List: 1 x Handheld Infrared Light1 x USB Cable 1 x English Manual