6V Battery Model 4LR44 for Dog Collar Equivalent to: L1325 PX28A, A544, 28PXA, 4LR44, 476A, 4G13, GP476, K28, V28, PX28AB, L1325, 1414A, V4034PX, PX28L, K28L, L544, L544BP, V28PXL, 2CR1/3N, 2CR1-3N, CR28L, 1406LC, 2CR11108, 3 years shelf life works for Dognet traning /beauty pencil/radio/cameraalarm/E-toothbrush/mouse etc battery weight: around 7g/pc battery size:13*25.2mm