The housing has random letters engraved on the side of it as shown in the photo in this listing. This does not affect the functionality of the part. Genuine Fitbit Versa 3 main housing replacement part. We consider this a Grade B (8/10) condition item. This part will only fit a FB511 Versa 3 smartwatch.

Brand: Fitbit

Fits Model: Versa 3 FB511

Color: Black

Part: Main Housing + HR Sensor [Engraved Letters and Numbers On Housing]

Condition: Grade B (8/10) shows little to no signs of previous use.