Features 1. Handheld cold red light device: The Cozion infrared light uses 14 650nm and 3 808nm cold red light beads, significantly improving the efficiency of use. At the same time, it is equipped with a 5/10/15/20 minute timer and four power levels of L1, L2, L3, and L4, which can be easily adjusted according to your own needs. 2. Convenient and easy to use: This red light care lamp is equipped with an LCD display screen, which is easy and intuitive to operate. Press the switch button to start the device, and the LED display screen allows you to easily understand the device status. In addition, it has a built-in rechargeable battery that can be charged at any time and supports wireless use. 3. Efficient red light technology: This handheld red light meter uses two specific wavelengths of red light, 660nm and 808nm. Among them, 660nm red light is easily absorbed by the skin surface, while 808nm near-infrared light can penetrate the deepest layer of the skin. 4. Usage: Simply hold the infrared nursing device and hover the light at a distance of 1-5 centimeters from the target area. We recommend using an infrared lamp to illuminate each area for 20-30 minutes every day. Please use 1-3 times a day for 14-21 consecutive days. It can also be used for pets such as dogs, cats, horses, etc., and is equally effective. 5. Easy to use: When the red infrared device is not in use, it will automatically turn off after one minute, avoiding the trouble of forgetting to turn off the device. Used to relieve discomfort in the elbows, neck, shoulders, hand joints, thighs, and knees. Specifications: Charging current: 1A Battery model: 18650 battery Battery capacity: 2600mAh Charger output voltage: DC5V Charger input voltage: 100-240V Charging time: 3.5-4 hours Usage time: 7-10 days (20 minutes per day) Laser wavelength: 650nm+808nm Maximum output power of each 808nm laser tube: 90MW 20% Maximum output power of each 650nm laser tube: 5MW 20% Package Include: Physiotherapy machine host * 1 Adapter * 1 Glasses * 1 USB charging cable * 1