It comes on low first. But make sure you get the 2008 or 09 version. There COULD be 07 single level version floating around in stores.
It is a great light. The only qualms I have about it are ergonomic. It can be hard to hold and press the button when wet or slippery since the head is so smooth, so I put an o-ring in the groove around the base of the head for more grip. I actually wish the body was a little thicker, had more aggressive knurling over more area (it has smooth spots), or had some features around the circumference for more grip area. The clip helps if you hold it such that one finger bears against it at the base of the head.
I'm knit-picking through. I think it is one of the best single cell lights.