Specification - with vacuum bag: yes - sealing length: 30cm - power source: electric - material: 52 * 90mm - size: 37 x 8 x 7cm *high quality product: subjected laboratory testing to effectively increase food shelf life. External exhaust and water inlet are added, keep reliability of the food sealer machine. *easy to operate& convenience in the kitchen: full-automatic simple electric plug in design with the control center placed on the top panel. Fast vacuum sealing with low vibration, low noise, safety lock design keeps the food