Got this for my father-in-law who is in HVAC. He loves it. Says it provides great light and is reliable. He also has a pretty big head and says it fits him very comfortably.

I recieved this headlamp about 10 months ago and wanted to get in some good tests before reviewing. I love it and would recommend it to others.

PROS:
1. Snug, comfortable fit for many head sizes, does not slip around
2. Bright (has 3 settings), wide lit area, best in a camp of 5 avid backpackers
3. Very battery efficient
4. Light and durable enough for any trip.

CONS:
1. This light beam seems a bit unfocused compared to others, and the focus is not adjustable. On the flip side, it illuminates a larger area than others I've seen.
2. You have to cycle through the power settings to get back to off.
3. Light can be adjusted to point in several angles, ranging from straight ahead to at your feet. I prefer straight ahead and sometimes found it slipping (about 20% of total range of motion) towards my feet.

I have used the Streamlight Trident Super-Bright Head Lamp to walk my two large black dogs at night. It provides light where I could not hold a flash light. It was also useful to focus light in small areas when I was building my home theater computer. The light can be tilted down and is easy to adjust and wear.

I am an avid night-time snowshoer. I had this old head lamp that served its purpose in providing light, but the small joint that held the lamp at certain angles for use soon lost its taught properties. I had to walk holding the light facing forward or else it would shine straight in my eyes.
While debating whether or not to use duct tape, I simply decided to try out different head lamps and to be sure that I avoided the problem I had previously. I went through two more head lamps before I found the Streamlight. Not only did the three light settings serve me better in the dark, but I finally found a head lamp that doesn't bounce when I walk. The Streamlight clicks into the angle you would like and stays there. No more holding my headlamp as I'm gallivanting through the dark!
The three LED lights combined with the bright spotlight meet all the needs of the night-time snowshoer. The single top strap is also one of the features of the Streamlight that I really enjoy because it holds more of the weight of the head lamp so there is less slippage when I decide to run or be acrobatic. There is also a comfortable forehead pad that makes wearing the Streamlight without a hat more convenient. The on/off button is easy to find, and it only takes 3 AAA batteries.
I have been extremely pleased with this product and its simple yet user-friendly features. It is also great for campers, mechanics and under-the-cover readers.

This product arrived on time and well packed from Amazon. It is much sturdier than the last one I bought from another source. It's easy to use and comfortable on my head. There are three light strengths, yet surprisingly the highest setting appears to be lower in intensity although it spreads the light beam over a wider area. The straps are well constructed and easily adjustable. It also includes the over the head strap to keep it from sliding down your head. I did not give it five stars only because of the high beam intensity.