User Guide: - Please wipe down lenses with a microfiber cloth before and after use. - The lenses are not user replaceable. - Always store in the provided eyewear case after use to avoid breakage. - Keep away from hard or sharp objects. - It is typical for the lenses to display a colored hue when looking at electronic displays. - When the battery reached EOL (End of Life), the dark state will become the lenses's default state. - Do not store this product in a vehicle to avoid prolonged high temperature exposure. - This product is water-resistant, not water-proof, do not submerge into liquids. - Avoid sungazing while using the product. - Avoid using if the lenses are cracked or damaged. - Avoid storing close to high temperature environments.