9LED 670nM red light torch against deteriorating eyesight Red torch Description: 670NM 9LED Deep Red Light torch against failing eyesight red torch. Red light against deteriorating eyesight. Regular "light showers" counteract the age-related fatigue of the retina. This LED torch with red light with a wavelength of 670 nanometres can potentially counteract the deterioration of vision in old age. Specifications: Product name: Red light torch Material: Aluminium alloy Colour: Black Wavelength: 665-670nm Size: 96 x 28mm Light colour: One mode red light Powered by: 3 x AAA battery (not included) Non-slip design & waterproof design. Package Included: 1 X Red Flashlight (3 x AAA battery not included)