Introduction:
Small footprint yet prodigious performance. That sums up the U2 in a few word. I fully enjoyed reviewing the U2 Ultra because it has no flaws, or drawbacks. This is one of the best flashlights that I have ever held in my hand. Not only does the U2 produce great light at its six, yes six different levels, but it also is clear bright light. The six levels helps when you need a little light for a long time, or a lot of light for a short amount of time. In my examination I saw that the lowest level was great for close up work, when the brightest of the levels projected far, and had a great beam spill.

Specifications:
-Max Output: 2 to 100 lumens
-Runtime: 40+ hours at low setting
-Length: 6.13 Inches
-Weight: 5.70 Ounces
-Battery: Two 123A Lithium

In the box:
-Surefire U2 Ultra (1)
-123a lithium batteries (2)
-Manual (1)

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Contents:
The box hosts the beautiful U2 and its paired manual. The manual has some important information, and is a great addition to any product. A manual says that the company cares about their product to list the features, and cares about the consumer to educate them about their new purchase. Shown below is the U2 lengthwise. The picture shows the awesome engraved logo, the design, the clip, and the dial to adjust.

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Examination:
The U2 is simple, yet functions as a complex device. The U2 has three sub sections that are all sealed with an O-ring for water protection. As a whole the light can be submerged into up to 35 feet of water and still supply a beam of light from its concave face. Shown below are all three pieces. The one to the far left is the center piece, or main body. It supports the clip, a few etched logos, a male thread set for the tail cap, and a female thread set for the lamp assembly. Next from the left is the tail cap which has a temp on, and click on. Last but most important is the lamp assembly. It starts on the top with the clear Lexan covering (not shown), then the electronics column, followed by the adjustment ring; next is the O-Ring, and then the threads to insert into the body of the flashlight.

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Shown above is the tail cap assembly. It includes the housing, and a button centered on the back. What is so great about this is the multiple options for turning on and off the light. You can either click to turn on the light, or hold momentarily to have the light on temporary. One other option is to keep it clicked and rotate that cap slightly to turn on or off the light. The preference is up to the user, and I'm glad that this is a rear cap to supple to the end user and allows many choices, and the ability to change batteries quickly.

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Shown above is the center; fully visible is the clip, and the nifty surefire logo. The clip is small and has a nice plastic inlay on the end as not to damage the U2 itself. The clip is strong, and serves a great purpose. The addition of the clip prevents the user from needing to buy a holster.

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Shown is the final and most dominant piece on the U2. The Lamp assembly, which is composed of the actual LED lamp, and the surrounding reflector. Below this large top section is the gripped ring. This ring has a smooth turning, and at exact plots while turning the light level will change. There are a maximum of six different levels. From low to high each level has an application, and is great from close, and far viewing.

Runtime:
The lamp has a great runtime from one to forty hours depending on the level that you choose. Shown below is a graph to shown the level and corresponding time in hours you should expect from the U2

Batteries:
The Batteries are small and light. There is a catch though; they are a little pricey. If you buy them from Surefire they will set you back about twenty dollars for a twelve pack. On the opposition they provide the light with plenty of power at minimum weight. In the long run the price outweighs the overall performance to weight ratio. Compare these two batteries that weigh a total of about two ounces to four AA batteries that weigh a total of about six ounces. It would take a total of four AA batteries to equal the power of two 123A batteries. I would rather pay a little more to cut down on that much weight.

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href="http://www.surefire.com/maxexp/main/co_disp/displ/carfnbr/0/prrfnbr/24187">Surefire

Conclusion:
I was again happy with the performance of the Surefire brand. The U2 proved to be a great light with a small footprint and many features. It was a joy to review and I would recommend it to anyone and everyone that is looking for the perfect flashlight.

Pros:
-Small Footprint
-Intuitive Tail cap
-Multiple settings for light
-Waterproof
-Looks awesome

Cons:
-NONE

The U2 Ultra proved to be an excellent addition to any environment, and provides great performance. For this I give the Surefire U2 Ultra an outstanding 10/10!

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