Robust Build: Constructed with borosilicate glass and 304 stainless steel for better heat resistance, security, and extended service life to maintain coffee integrity Versatile Kitchen Solution: Perfect for organizing coffee, tea leaves, rice, sugar and dry goods Ample Storage Capacity: This 1.6L vacuum sealed container provides generous room for preserving ground coffee and whole beans, accommodating up to 550g while maintaining freshness Leave headspace for optimal sealing results User Friendly action: Press and hold the power button to activate, then tap two times to initiate vacuum or release air Features integrated timer and measurement indicators for accurate portioning when storing coffee Extended Battery Life: Equipped with 2000mAh LiFePO4 battery, this unit provides up to 4500 hours of after 4 hour fee using included cable