670nm Usb Deep Red Light Led Flashlight Against Deteriorating Eyesight Torch

SpecificationProduct name: Zoom red flashlight Red light wavelength: 660nm-670nmLight color: Red light3 switch Mode: Strong/Low/StrobeSize: 112x28mmLens type: Frog eye Optical lensWorking voltage: 3.7VProduct Material: aluminium alloyPower supply: built-in lithium battery ( INCLUDED)Waterproof rate: IPX5 FeaturesRed light against deteriorating eyesightRegular "light shower" counteracts age-related retinal fatigueSuch an LED flashlight with red light of 660-670 nanometers wavelength can possibly counteract the deterioration of visual performance in old age. Package included1 x Zoom Red Flashlight1 x USB cable