It's really bright and feels pretty solid. I don't know about the 900 lumens, but i have some quality lights with ~300 lumens and it's def brighter than them. The spot is a bit on the small side so i think i'm going to get the dremel and open up the reflector a bit to make it cover a bigger area. Not sure how well it would withstand rain but at £20 it's not that big of a deal.
Got one of these in the mail today. Planning on using it on my Rando mounted to the front rack.
http://www.ebay.co.uk/itm/260894133403?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_1741wt_1396
It's really bright and feels pretty solid. I don't know about the 900 lumens, but i have some quality lights with ~300 lumens and it's def brighter than them. The spot is a bit on the small side so i think i'm going to get the dremel and open up the reflector a bit to make it cover a bigger area. Not sure how well it would withstand rain but at £20 it's not that big of a deal.