Features: 1. Using 14 650nm and 3 808nm red light beads, painless and sterile treatment, let you say goodbye to pain and protect . 2. Semiconductor laser irradiation, four levels of adjustable laser intensity, can effectively dredge meridians, relieve joint and muscle pain, promote wound healing, and improve immunity. 3. This physiotherapy device can be used not only to relieve physical pain in humans, but also to relieve joint inflammation in pets and promote wound healing caused injuries. Intelligent timing function: four levels of intelligent timing settings (5/10/15/20 minutes), to meet your different needs. 4. The built-in 2600 mAh lithium battery can be used for 20 minutes a day, and the battery life can last up to 10 days after being fully . 5. Energy-saving design: the machine will automatically shut down when charging, and the machine will automatically shut down if there is no operation for one minute. 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 Use 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% Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Material: plastic colour: White Package Contents: 1 x Host 1 x Glasses 1 x USB Charging Cable 1 x English User 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.