Come and see our amazing products. The bag sealer needs 2XAA alkaline batteries(Not Included).When the battery power is insufficient, the sealing effect willbe affected, please replace the battery and remove the battery if it is not used for a long time.Move the sealer quickly and gentle for thin bags, slowly and harder for thick bags. Do not stay on the plastic bag for a long time, otherwise the plastic bag will melt due to excessive temperature.Do not put yourfinger into the sealing gap to avoid being scalded by accidental operations. Pls confirm with us about the packing info, stock color and exact production time before placing your order.