Petzl Zipka Headlight
Fits in your pants pocket. Headband is a comfortable retractable string.

Here's an entire headlight with a retractable head band that's actually smaller than the headlight only portion of the Trident. Three LEDs give you a choice of brightness settings. It's so compact that you can carry it in your pants pocket and hardly know it's there.

Streamlight Argo LED Headlight
One watt Luxeon LED with three intensities: High, Med., Low

The Argo headlight a one watt super powerful Luxeon LED. Excellent run time: 20+ hours on Low or almost 5 hours at maximum brightness on high followed by 3 ½ more hours of declining useable light. Powered by 2 three volt lithium batteries. Tilt head. Very light weight (4 oz)

Streamlight Trident LED/Incandescent Headlight
Dual Use--Long life LEDs or High Power Krypton Bulb

With it's extended burn time, the Trident headlamp is perfect for a wide variety of situations. Designed for extended burn time up to 100+ hours.
Three high power white LEDs & high output incandescent bulb

Here's what I like about this headlight. It's got three LEDs and the krypton bulb all in the same reflector. With just the push of the top mounted button, you can click between three different light intensities: High and Low LED power and Krypton power.

Streamlight Sceptor LED Headlight
Seven long life LEDs

Just like the Trident, but uses 7 LEDs instead.