EASY TO USE: Ergonomic and portable for easy use and storage at home or away. 850nm Infrared and 660nm Deep Red - Optimal wavelengths for both professional and personal use. Non-invasive safety. You can feel confident while providing safe relief for your pet. One of the greatest joys in life is a happy and healthy pet. The VETLIGHT provides red light relief for many different types of pets, including dogs, cats, and horses. Our professional device is perfect for animal home care.