This is the second I bought this time for a family member because for the price frankly there is nothing to say under normal conditions of use. What makes 850 lumens or 900 I do ... it gives light very well and that's the point. Warning this flashlight can not split logs, it can not break a wall, it can not kill a warthog gallop !! Article recommended for those who still hesitate and do not have taste of aesthetes.