[. . . ] By ensuring these batteries are disposed of correctly, you will help prevent potentially negative consequences for the environment and human health which could otherwise be caused by inappropriate waste handling of the battery. the recycling of the materials will help to conserve natural resources. In case of products that for safety, performance or data integrity reasons require a permanent connection with an incorporated battery, this battery should be replaced by qualified service staff only. [. . . ] to ensure that the battery will be treated properly , hand over the product at end-of-life to the applicable collection point for the recycling of electrical and electronic equipment. For all other batteries, please view the section on how to remove the battery from the product safely. hand the battery over to the applicable collection point for the recycling of waste batteries. For more detailed information about recycling of this product or battery, please contact your local Civic Office, your household waste disposal service or the shop where you purchased the product. Disposal of the 3D Glasses Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. For more detailed information about recycling of this product, please contact your local Civic Office, your household waste disposal service or the shop where you purchased the product. If these glasses are broken, keep broken pieces away from your mouth or eyes. Keep children away when replacing the battery or opening the battery cover. If a child swallows the battery or battery cover, consult a doctor immediately. When replacing the battery, insert it using the correct +/­ orientation. Use only the specified battery for this product: Lithium coin cell battery, CR2032. Be careful not to pinch your fingers in hinges when bending the temple frames. Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water. If using a chemically pretreated cloth, be sure to follow the instructions provided on the package. [. . . ] If using a chemically pretreated cloth, be sure to follow the instructions provided on the package. Never use strong solvents such as a thinner, alcohol or benzine for cleaning. Before use: Remove the battery's insulating sheet before using the product for the first time. [. . . ]