Original Fitbit Sense 2 (FB521) back cover replacement. Condition: New / Grade A Brand: Fitbit Model: Sense 2 (FB521) Part: Back Cover Repair Video: youtu.be/Z2-YWmGRD84 (Showing how to open the watch up) Fitbit Repair Kit (Tools, Pry Tool and Glue): https://www.ebay.com/itm/326216057454.
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