Amazon.com: BlueDot Trading Single Pack 2CR1/3N or DL1/3N or CR11108 Lithium Manganese Dioxide Cell Battery 3V for Dog Collar, cameras, calculators, and more, Quantity 1 : Health & Household
Amazon.com: BlueDot Trading CR1/3N CR11108 Lithium Metal Manganese Dioxide 3.0v Battery for use in Cameras, Photo Equipment, Keyless Entry, Dog Collars in Retail Blister Pack, Quantity 4 : Health & Household