The Walther Pro GL1500r flashlight with its special XHP50 LED chip from Cree, generates an amazing 1350 lumens. It is useful in other ways too – when the USB cable is attached it can serve as a power bank to recharge mobile phones and tablets, all without removing the battery.
Included:
ANSI FL1 Standard - Technical Data
The American National Standards Institute (ANSI) published in 2009 the "Flashlight Basic Performance Standard", FL1 for short. So you can compare flashlights across manufacturer boundaries neutral. This lamp has been tested to stringent ANSI specifications.