This is a fantastic, tough, ultra reliable small flashlight that really has earned a permanent place in my EDC. Not an easy task.
28 lumens with over 2 hours runtime will serve for 95% of the tasks that I need a light for. The push button tail switch with momentary or constant on operation is rarely found in this size class.
These lights are a little more expensive than the average keychain torch, but I think they´re worth it. Details from the maker can be found here :