Name:R1 Sort:Greencell Super Heavy Duty Batteries(PVC/metal) Jacket: PVC/metal Nominal Voltage(V):1.5V Dimensions(mm): Diameter10.9mm(PVC)/11.5mm(metal) Height30.2mm Average Weight(g): 6.5g(PVC)/8g(metal) Cross Reference: IEC R1 JIS SUM-5