This is the brightest headlamp we've ever seen! This pretty much leaves all others in the dust when it comes to intensity and low power consumption

The LED Lenser H7 Headfirelight features 140 lumen's of focus-able light that last up to 55 hours ( 55hrs (low) 30h (high) from standard AAA batteries. The H7 Headfire is totally superior in power efficiency, lasting much longer than a traditional bulb on the same battery.

Unlike standard focusing headlamps, LED Lenser focusing headlamp flashlight combine a unique lens and reflector system to provide stageless transition from a broad flood beam to a focused spot beam. The advanced focus system flood beam provides a broad circular beam of light that illuminates larger, close-up areas and eliminates dark spots in the center common in traditional focusing headlamps. The spot beam provides a sharply focused beam that illuminates more distant areas.

This sucker is powerful!!
 

Brightness – Lumens 140
Working time: 55h (low) 30h (high)
One-handed Speed-Focus
Focus: Spot / Flood
Max beam distance: 160m
Beam colour: White
Operates on 3 x standard AAA Batteries (included)
Lifetime Warranty (Return to manufacturer)
The low profile head can be tilted from 26 to 85 deg
Beam visible up to 3,000 yards
Dimming switch system
Powered by 1.25 Watt super-bright, energy efficient Power Chip LED lamp
Shock proof, water resistant
Crystal reflector tube for extra brightness
Focusable beam from wide flood to narrow long distance
55 hours of light without a battery change
Up to 100,000 hours of service from Light Source
Batteries included (3 AAA 1.5V cells)