Berkey BLB-4X2-BB Light Water Purification System with Blue LED Light Base and 2 Black Elements Purifies up to 4 gallons per hour Filter Life: Up to 3,000 gallons per filter element Holding Capacity: 2.75 Gallons Includes blue LED light base Made of a high impact strength, non BPA copolyester, which is shatter resistant and virtually unbreakable