Usage tips: do not overfill bags ( max 3/4 of bag volume); ensure the open end of the bag is placed correctly into the vacuum chamber between the upper and lower gaskets; use bags designed for vacuum sealing and place the smooth side up; allow the unit to warm up ~30 seconds before first use and let it cool 1–2 minutes between sealing operations to avoid overheating. Warnings and care: disconnect power before cleaning, do not submerge the unit in liquid, clean exterior with a damp cloth, dry thoroughly before reuse, avoid sealing items with sharp points (bones, shells) that can puncture bags. Vacuum Sealers