Read more Power ON / OFF Press the switch of the sealed coffee container for 8 seconds, then you will hear a long beep and the power will turn on or off. Normal use Touch the switch, the vacuum pump will start to remove the internal air after a beep. When the internal vacuum degree reaches the set value, the vacuum pump will stop automatically. When the vacuum degree drops, the air pump will automatically start to maintain the vacuum state. Release vacuum state Touch the switch for 2 seconds, then you will hear 2 beeps. You can open the jar after a beep. Note: Please do not forcibly open the sealing cover in the vacuum sealing state! Easy to clean The bottom of the seal cover can be rotated open for easy cleaning. Read more Ordinary sealed You can use airtight jars to preserve ordinary food. When closing the lid, please push the air valve to remove the air at the same time to ensure that the sealing lid can be installed in place. Vacuum sealed You can use the Manual pump to vacuum preserve coffee, spices. You can also use the electric air pump that we will put on sale, which is more convenient. Bottom protection base The thickened silicone sleeve protects the glass jar from bumps. Fits with the sealing lid, making it more stable when stacked. Status prompt When it reaches 0.5 atmospheres, the center of the valve will change from convex to concave. Read more vacuum coffee canister (1.2L) Set of 2 glass storage jar with lid Set of 3 glass storage jar with lid Set of 4 glass storage jar with lid Sealing method Electric Manual Manual Manual Diameter 100mm 100mm 100mm 100mm Wall thickness 3.2mm 3.2mm 3.2mm 3.2mm Universal ✓ ✓ ✓ ✓