Fox Labs, 5.3 SHU Pepper Spray - 2 oz Stream (Flip Top) 22FTSDB The size of the unit is 4-3/4 High x 1-3/8 Diameter Discharges 12-15 one-half second bursts Invisible UV dye for suspect identification under black light Nonflammable & Taser safe Birth date on each unit, three year shelf life