【Compatible Device1】: For Sasmung Galaxy Watch 4 44mm SM-R870 SM-R875
【Compatible Device2】: For Sasmung Galaxy Watch 4 Classic 46mm SM-R890
【Package Include】: 1x Battery &Tools in hard box, no installation instruction, you can find lots of instruction videos on internet or find a technician for help.
【Warranty】: 7*24 hours email support, 30 days money back, 360 days Hassle-Free Warranty.