1. Our ear canal laser therapy line uses 650nm wavelength phototherapy to irradiate the head and blood vessels in the ear, injecting a large number of photons into the blood to improve brain waves and blood. 2. Helps balance high blood pressure, reduce high cholesterol, high blood fat, high blood sugar, etc., and enhance the self-repairing effect of the immune system. 3. Use once a day in the morning and evening, 30 minutes each time, our laser physiotherapy device helps reduce inflammation and swelling, activate cell activity and blood, regulate and blood, and enhance physical fitness. 4. The compact and laser therapy device is easy to carry, so you can use this product anytime, anywhere, and the whole family can use it. 5. USB universal interface, supports a variety of power supply devices, such as computers, mobile power supplies, plugs, laptops, etc. Power:5mW Wavelength:650nm Net weight:23g Line length:1.5M Color:As Shown Material:plastic Package Contents: 1 * Ear canal laser physiotherapy line 4 * Earplugs 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.