Urnabeam Tailswitch with mode selector ring

The sort of thing I'd like to see on some other lights.

Must be resistor based though...........

How could a resistor produce a strobe or SOS mode? It must be PWM based like both Solarforce skyline and N-light B5.

DOH! I missed that it had flashing modes too.

Interesting.....

15 bucks at pimped paintball. :)