Just tried to view files on the K2 SD card using the USB adaptor on my Galaxxy S9 mobile. And eureka, it works. Can play all the vids with super quality and sound. Will be very useful at meets when I want to show the lads how I nearly came off on a corner (no just joking)
My phone was supplied with a USB adaptor, Found an app on the phone called 'My Files', looked for the USB drive and there's all the vid files just waiting to be played.