I have a GoPro Package deal up for sale: 

GoPro Hero Session 5 & Session 4 + countless accessories.  Camera batteries have decent life - maybe 2 hrs, however you can charge while recording.  I used a power pack or 12V USB outlet.

* 2 wireless remotes

* 2 OEM plastic cages (one repaired)

* 2 Aftermarket aluminum cages

+ Extra cage from another model, was in my box of parts

* Replacement lenses.  One is cracked original, but still functional.  I just kept as a spare.

* Body / wrist / clip mounts

* numerous base mounts w/ 3M adhesive pads

* various ball / angle / adapter mounts.  few of them were 3D printed.

* Selfie stick, tripod, ball clamps

* various wrenches

* 2 256Gb microSD cards

* 3 64Gb microSD cards

* 1 32Gb microSD card

* 1 16Gb microSD card

* 2 4Gb microSD cards

* 3 microSD card adapters

* Soft accessory case