Dry battery, pvc jacekt withmetal cap ⊥ 4pcs/shrink pack; 15-60minutes duration. Features:1) R6P, AA, UM-3, 1.5V, carbon zinc battery2) Nominal Voltage:1.5V 3) Height:50.5mm 4) Diameter:14.2mm 5) Jacket:PVC6) OEM orders welcomedInner packing: 2pcs/shrink pack; 40pcs/color boxOuter packing: 1920pcs /ctn1800ctns/1x20ftCertificate: CE; SGS 1.5v aa battery