KaPonsec SR616SW Silver Oxide battery can maintain close to the same voltage for a long time, effectively preventing unstable current from damaging the watch.
KaPonsec SR616SW Silver Oxide button battery is not only fully charged at 1.5V, but also has high discharge efficiency.
SR616SW/321 button battery uses materials with better stability, with higher battery energy density, stable discharge, high discharge efficiency, and long battery life.
321 1.5V Silver Oxide button battery, low self-discharge, life of up to 3 years, unused batteries can still be used normally after being stored for a period of time.