FULL VACUUM STORAGE: smart automatic vacuum pump quickly removes the air inside the container in seconds. Vacuum operation automatically stops once it reaches sufficient vacuum state (-55-65 KPA). It prolongs the lifecycle of food up to 5 times longer than non-vacuum storage containers. MULTI-USE CONTAINER: Use it as an airtight seal vacuum cup for storage juice, milk, ice tea, smoothie. If long-term or fresher storage is required, combine it with the electronical samrt automatic vacuum pump to create full vacuum pressure. If you need smart automatic vacuum pump, Vacuum air oxidation seal moisture-proof high seal isolation oxygen food does not oxidize.One key vacuum delay food oxidation surging suction performance stable and Electric vacuum pump saves time and labor. One key automatic air extraction, oxidation prevention, extension and fresh-keeping portable vacuum machine. Food grade dry and wet dual purpose Product name: Vacuum fresh-keeping box sealed jar Applicable temperature: -20-70 Capacity: 1.2L+2.1L Colour:White Material:AS+Silica gel Package Contents: 2x sealed jar 1x Electric pump Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.