This is a generic, equivalent one, 100% compatible. This Replacement Li-ion battery is designed to compatible with Apple Watch Series 4 40mm A2058 A2007.

Specifications:
* Product Type: generic/equivalent
* Chemistry: Li-ion Polymer Battery
* Condition: new, 1 Year Warranty!
* Brand New Replacement Battery For Apple Watch Series 4 40mm
* High durability with extra power. Built-rechargeable battery protection circuits safety.

Compatible Part Numbers:
A2058 A2007

Compatible Model:
Fit for all Apple Apple Watch Series 4 40mm

Package Included:
1 x Replacement Battery Pack For Apple Watch Series 4 40mm A2058 A2007