Damn, I was really hoping the larger switch was a "master" clicky switch, and the smaller switch was momentary for changing modes. Unscrewing the body slightly on the SRK to prevent battery drain is kind of hokey to me.
Oh, so the big button is a "Power" button - hold a sec to turn on & off. Tap to change between "first mode" (your memorized ramping level) & then high. That it? Another tap to go from high to the "first mode"?
Mine arrived today. Freakin sweet! Puts out between 2150 & 2200 OTF. Hotspot is super sharp compared to the King and it feels much smaller than the King. Threads are clean, deep,smooth as butter, and fully anodized so you can lock Iit out for zerp parasitic drain. Just 5-10 degrees locks it out. The buttons are smaller than you think so good luck finding replacements if you dont like them. I like it better than the SRK stock. The ramping feature lets you choose any output level for your custom mode. Long press turns it on and off so you don't have to cycle through the modes to turn it off. Maching is clean and crisp. The ano is even and consistent. The reflectors are clean and smooth. A real bargain for $35! I almost forgot to mention the AR coated lens. ;)