1. Replacement back cover for Samsung Galaxy Watch3 SM-R840 / R845 / R850 / R855.
2. Replace the old, broken, cracked, damaged 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.