Product description 5 x CR2025 coin battery 3V with long expiry and compliant with current battery laws Product Safety and Compliance DetailsProduct Safety and Compliance Details Warning This product contains a button/coin battery and is hazardous. Keep out of reach of children. Batteries can cause severe or fatal injuries in 2 hours or less if swallowed or placed inside any part of the body. Medical attention should be sought immediately if it is suspected that the battery has been swallowed or placed inside the body.