Garmin Virb 360 Action Camera $879.88 Delivered from Ryda eBay

This action camera can stitch 4K on the go, or 5.7K raw. It logs sensor readings including GPS internally, heart rate and cadence via BLE etc, and the software can overlay this into your videos.

One can combine it with a powered mount (spring loaded cradle for quick release) to remove any limitation being placed by the battery.
https://buy.garmin.com/en-AU/AU/p/562253
This one would let you go continuously off a powerbank. I have the cable routed to the extremity of my bicycle handlebar, where the camera is mounted. Usually Ryda sell them too but seem to be out of stock currently.

Samples:
https://www.youtube.com/watch?v=gWHi3LlvC3w
https://www.youtube.com/watch?v=kcHHK9HP4Jk
https://www.youtube.com/watch?v=Q5fNSbIAj24
https://www.youtube.com/watch?v=-QrPW-i44_M
Review:
https://www.dcrainmaker.com/2017/05/garmin-virb-360-action-c…
and also comparison to the similarly placed GoPro Fusion:
https://www.dcrainmaker.com/2018/02/gopro-fusion-360-in-dept…

Next closest local price appears to be $999.
https://www.ja-gps.com.au/Garmin/virb-360/

Original PUMP20 20% off Selected Sellers on eBay Deal Post