Internal battery Apple iWatch 1 (A1578) 38MM SERIES 1 Lion 205mah

Internal battery Apple iWatch A1578 38MM.
Li-Ion Polymer 3.8V 0,78wh 205mah.
For instance, and Iʼm citing Appleʼs official data, the iPhoneʼs battery will retain up to eighty percent of its original capacity at 500 complete charge cycles

• Apple Watch 1rst 38MM GN (A1553)