Replacement Battery for: CASIO Cassiopeia BE-300, Cassiopeia BE-500, CASIO CGA-1-105A 100% Compatible with original battery; 180 days warranty Capacity: 800mAh; Nominal Voltage: 3.7V Battery Type: Li-ion Polymer battery; Safe and reliable battery certified by UL, CE, UN38.3, RoHS Over 300 times cycle life; Long working time