This is the best light I've ever bought.
It is really bright.
It has lots of modes;
Constant 50%, 80% or 100%
Flash 50%, 80% or 100%
Random flash
Strobe
Alternate flash.
The battery charged quickly.
The bracket is good and the alternative clip for mounting on a bag or clothing is useful.
I love this light so much; I've just bought the front one to match.