An update on this light after a couple of month's usage. It has a useful feature i did not recognize immediately. In order to turn on the light, it is necessary to press and hold the switch for about a second a mere tap will not turn on the light. This is useful in a key chain light because it is less likely to turn on by mistake.

The light is available in a bronze/gold color which seems to display wear marks less conspicuously than the usual black color. All in all, a dandy light. I have been glad on several occasions that I had it handy.