Manual REE Please keep it properly when traveling to avoid failure caused by extrusion of products by external forces. HTH, WEAR, BIR SHEER. Don't pull the glasses leg excessively to avoid damage to the product by textual force. WIRE, BRIM RAGA, The product shall not be washed or soaked with water to avoid short circuit of the product. HAREBRAINED, UREA RIT. Don't wipe the lens with paper towel or towel, and use professional cleaning tools to avoid adverse effects on the product.