This is the big daddy of front lights with a whopping 500 Lumens of power!
It's USB Rechargeable with strong alloy and composite body.
4 different settings: Flash (120hrs run time), Low Beam (8hrs run time), High Beam (4hrs run time) and Ultra High Beam (2hrs run time).
It also has a very handy Power Bank mode, which allows you to charge things such as phones, other lights etc. in an emergency (first world emergency that is ;))
Charge time (USB Cable included) is 6.5 hrs.
Dimensions: L118mm x W43mm x H44mm
Battery Spec: 2500Ah Li-ion rechargeable
Power Bank Spec: 5V 1A USB Output
Mounting: Bracket (suits 25.4 to 31.8mm)