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.
Specifications:
Product name: Red light flashlight
Material: Aluminum Alloy
Color: Black
Power rate: 5W
Red light wavelength: 665nm-670nm
Size:
Light Color: Red lights
Switch: 3 Modes
Power by: 1x Li-Ion battery 3.6v/3.7v OR 3X AAA battery (not included) Skid-proof design & waterproof design.
Package Included: 1 X Zoom Red Flashlight    
|