This is a great light. It has the brightness that I wish my Olight baton III Promax would have had. You don't need turbo on this light. But the fact that I will do 2000 lumens for about an hour and medium is 500 lumens it makes the difference medium on this light almost seems like the Promax on high and you have that for 5 hours. Hi looks like the Promax on Turbo and you have that for an hour or not just a couple of minutes. Absolutely great light