The Streamlight ProTac 90 is Streamlight’s newest Dual-Fuel (1 x AA OR 1 x CR123A battery) model from their ProTac series.
The “90” is most probably referencing to the 90° angle (Right Angle) that is one of the main highlights of this new model.
Let’s check out the merits and demerits of this new Streamlight ProTac 90 model.