Hi, thanks for the reply. I figured it out. On the Tcr-20/21 you have to twist the triangle metal piece on the tail end in a counterclockwise position first to turn it on. As for brightness, you just twist the magnetic ring.
What’s going on people! Just got a excellent looking condition TCR-21. It was from eBay and it came with jetbeam black box and papers with a sure fire Cr123 battery in it. I don’t know if it’s me but it doesn’t turn on. It has the twisty rapid response ring to turn on. I took out the battery put...