Li-ion battery for Apple Watch Series 7 45mm 309mAh.

Best replacement for the original battery with comparable standby and talk time.

The Li-ion battery provides excellent continuous power sources to your device.

Use the authorized charger only. If not using the battery for a long time, store it in a dry and cool place and charge it fully once every three months.

Compared to the nickel-cadmium battery, the lithium-ion battery has no memory effect.

Built-in microchip inside prevents overcharging and extends battery life.

To reduce the risk of fire or burns, do not disassemble, crush, short-circuit, or dispose of in fire or water.