Original Motherboard, For Samsung Galaxy Gear S3 Frontier LTE SM-R765A, For Samsung Gear S3 Frontier SM-R760, For Samsung Galaxy Watch4 40mm SM-R865F/R860 EU, For Samsung Gear Fit2 Pro SM-R365, For Samsung Galaxy Watch3 45mm SM-R840????????????????????...1. Motherboard replacement part. 2. Replace your broken or unusable item with a new one. 3. Each item has been checked and in good condition before shipping. 4. Completely fit and work. 5. Professional installation is highly recommended. We will not be responsible for any damages to your device that you may cause during the changing of replacement parts.