The contents of this 1.7 oz (50ml), pump and spray bottle of Lens Cleaner II from B+W can be used to clean and maintain valuable optics such as camera lenses, eyeglasses, telescopes, or spotting scopes. It is a non-flammable and non-alcoholic liquid that is designed not to leave any residue. When used with a microfiber cloth, smudges, fingerprints, oil spots, or dirt can be effectively removed.