You can get Turbo (900 lumens) with a normal IMR 16340 or protected 16340 cell which has higher discharge current protection.
My sample has the feature that gradually decrease in brightness on High and Turbo mode when you turn the light off. It takes about 1 second (at the most) when you turn the light off.
If your previous mode is Moonlight or Low or Med. or High, a double quick click from Off will jump you to Turbo. And you will see the gradually increase in brightness as well.
It takes about <1 second (at the most) when you turn it on.
This feature isn't distract me. I think there's no way of turning off the feature.
Welcome to CPF. cumeche! :welcome:
Here is my
Olight S1R review! Hope enjoy it.