Roche F6 V1 and V2 differences

Hi Guy

Just want to know whats the differences are between V1 and V2.

Things that I know.

V1 has a Low power Red LED. - V2 does not have the LED, does it have low voltage warning by other means?

V1 has H,M,L and hidden strobe and S.O.S - V2 has only H,M,L and no strobe and S.O.S

V1 has a shorter tube than V2 which length of batteries can each version take?

What are the high ,med and low reading in amps for each?

Are there any quality difference between the two?

Do they both have mode memory?