Phftrcew 1 9 Led Red Torch 670Nm Deep Red Light Flashlight Against Deteriorating Eyesight

PHFTRCEW

Red light against deteriorating eyesight Regular "light shower" counteracts age-related retinal fatigue Such an LED flashlight with red light of 670 nanometers wavelength can possibly counteract the deterioration of visual performance in old age. Power by: 3X AAA battery (not included)