http://www.futureelectronics.com/en/Search.aspx?dsNav=Ntk:PartNumberSearch%7cCR+Series%7c1%7c,Ny:True,Ro:0,Nea:True,N:4294851090 . Panasonic offers a series of lithium batteries in many shapes and sizes including cylindrical, coin and pin types. They also introduced coin type rechargeable lithium batteries for applications like memory back up. The two battery series I will be discussing today are the CR and BR series of non-rechargeable Lithium based batteries. https://youtu.be/AAX8z9LOOFs