Click Medical Cyalume 12Hr Snaplight Green Safety Light Stick 15cm

Each light stick is individually foil-wrapped for protection from light and moisture, They have up to a five-year shelf life from date of manufacture. Duration of 12 hours, Waterproof, Visible up to 1 mile (1,6km), Generates no heat, sparks or flames, Non-toxic, non-flammable, Always ready for use, Red - danger, orange - cautionary, Green - safe