Cycleops fluid 2 v1 vs v2

p1tse
p1tse Posts: 694
I'm sure I've read there has been an update on cycleops fluid 2 from earlier versions

Does anyone know if you can physically tell or what to look out for as I'm looking at used items
Thanks
Wanted: Cube Streamer/Agree GTC Compact / Pro/ Race : 53cm