1000 lumens, USB rechargable.. Those two points alone are what sold me on this one.
What's really useful is the magnet base and the swivel head. Makes it a great car light. Even if your vehicle is half plastic, the magnet will find some steel to grab onto if you're under the hood in the dark.
Brought it out camping/hiking but not to the beach. I like to save the grit and salt for my cheap flashlights.