Unlike many animals, I can't see very well in the dark. Perhaps you have the same problem as I do. One option would be to stay in my tent at night, at least I wouldn't trip over a bear or fall off a cliff. Or I could lug around my aluminum MagLite that weighs a ton. Not likely. Or, perhaps I could bring along a lightweight headlamp that I can conveniently wear on my head, keeping my hands free to do something else more interesting. I kind of like the headlamp idea. That way, if I do run into a bear, I can run away and climb up the closest tree with my hands free.

If you have not used a headlamp before while on your outdoor adventures, you need to take the time to give one a try. At first, they may seem a little awkward (and make you look a little geeky), but you will soon find out how convenient they really are.

The headlamp that I have been using most recently is the Gemini headlamp from Black Diamond. Here's why I use this world class product:

• The Gemini offers a single bright Xenon bulb when you need lots of light on the trail (watch out for those cliffs), plus two LED lights for times when you need less light, like when you are in or around your tent. The advantage of this is that you save battery life by picking the right light for the right situation.
  
   
• Running the Xenon bulb exclusively lasts about 4-5 hours, and running the two LED lights exclusively lasts 70-80 hours. Actual life will depend on which light is used, the type of batteries used, and the ambient temperature.
  
   
• The Gemini uses three AA batteries and has a 3-point strap. The angle of the light can be adjusted up and down to meet your needs. You can wear the Gemini alone, over a warm hat, or even over a helmet.
  
   
• The Gemini has a three function push toggle switch that switches between the Xenon bulb, the two LEDs, and the off position. It is located conveniently on the lamp. The switch is designed so that it won't accidentally come on when it is inside your pack. You can't run the Xenon bulb and the two LEDs at the same time.
  
   
• The craftsmanship of the Gemini is first-notch, and you should expect to use the Gemini for many years.
  
   
• The Gemini (2003 model) comes with an extra Xenon bulb and batteries. It weighs about 7 ounces with batteries.

The Gemini is very versatile and can be used for many purposes, including day hiking (just in case you get stuck out at night), backpacking, trekking, adventure travel, climbing, mountaineering, caving, and for even around the house when the power goes out.

Using the Black Diamond Gemini Headlamp in the Real World

Most of the time, I have found myself only using the two LEDs, as they provide more than enough light in most cases. The color of the light is a little strange (bluish), but you get used to it. And when I need the extra oomph of the Xenon, it is easy to switch on.

Once you get the Gemini adjusted, it is relatively comfortable and stays put. I am not a big fan of anything on my head (I find it distracting), although wearing the Gemini is not much of an issue.

The only slightly irritating feature of the Gemini is that when you turn it on, the Xenon light comes on first. Then when you press the toggle button again, the LEDs come on. And when you press the button again, then both lights are off. If you use the Xenon light most of the time, this is not much of an issue. But I use the LEDs more often, and having to toggle through the Xenon to get to the LED, which unnecessarily wastes battery power.

How long the batteries last will vary, so I suggest you start out new adventures with new batteries, plus backup batteries. Lithium and alkaline batteries will provide the greatest battery life.

Recommendation

Whether you know it or not, every outdoor adventurer needs a headlamp. If you are in the market for one, give the Gemini a try. You won't be disappointed.

Product Notes

This review refers to the 2003 edition of the Gemini, which was slightly upgraded from the original version.  There is only one size that can be adjusted to fit most people. The MSRP is $38.50. Black Diamond also offers some additional headlamps if you find that the Gemini is not right for you.