Fox Labs, 5.3 SHU Pepper Spray - 2 oz. Cone (Flip Top) 22FTMDB 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.