Garmin Fenix 5S Plus Saphire Premium Multisport GPS Watch 42mm With Extra Bands. Watch Back Cover Battery Cover Replacement for GARMIN Fenix5 Plus Sport Watch. This is from the garmin site " The bezel on a Descent Mk1, fēnix 3 series, fēnix 5 series, fenix 5 Plus series, fenix Chronos, tactix Bravo, or tactix Charlie multisport watch is the metal ring that surrounds the watch face. Although the bezel on the watch appears to be connected with screws, it is not a replaceable part. VLiwn.