This is a generic, equivalent one, 100% compatible. This 3.88V 240mAh Replacement Li-ion battery is designed to compatible with Samsung Galaxy Watch 4 Classic 42mm.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 3.88V
* Battery Capacity: 240mAh / 0.93Wh
* Condition: new, 1 Year Warranty!
* Easy Installation
* Battery is tested accurately before shipping
* Compound Li-ion Chip, Safer and More Reliable

Compatible Part Numbers:
EB-BR880ABY, 1ICP5/21/21

Compatible Model:
For Samsung Galaxy Watch 4 Classic 42mm
For Samsung Galaxy Watch 4 40mm
For Samsung Galaxy Watch 4 SM-R860
For Samsung Galaxy Watch 4 SM-R865U
For Samsung Galaxy Watch 4 SM-R880
For Samsung Galaxy Watch 4 SM-R885
For Samsung Galaxy Watch 4 SM-R885U
For Samsung SM-R880NZSCXAA
For Samsung SM-R880NZSAXAA
For Samsung SM-R885UZKAXAA
For Samsung SM-R885UZSAXAA

Package Included:
1 x 3.88V 240mAh Replacement Battery for EB-BR880ABY Samsung Galaxy Watch 4 Classic 42mm