As its name implies, the JET-I Pro EX V2.0 is the second revision of JETBeam's 2x AA flashlight. The V2.0 is functionally the same with differences coming in the form of physical design. Right up the front of the head is a plastic inlaid bezel which hold the lens in place. Below the lens is a textured reflector which has a medium orange peel texture. The reflector is well polished with no flaws to be seen. At the base of the reflector is a nicely aligned LED. As you may notice, the emitter sits slightly higher from the base of the reflector. Interesting to note that most of JETBeam flashlights have their LED and reflector aligned this way where you can see the silver ring round the XR-E LED reflecting off the base of the reflector. The rest of the electronics and drivers sits in the main cavity of the head. The exterior of the head has scallops and various flat faces machined on it which also serves as an anti-roll feature. The threads on the head is very cleanly cut, noticeably cleaner than some of their previous offering. They also came well lubricated too. The threads are cut with the square edge design which has right angles on its edges unlike common threads which have convex curved edges. Threads are smooth and has no grinding and no cross-threading was encountered throughout the review. Right above the threads is a rubber o-ring which provides a seal on the front end of the battery tube. Looking from its rear end, you'll see part of the electronic's PCB and the "+" end contact for the battery. This contact surface has a physical reverse polarity protection which is implemented via raised triangular ring.

The battery tube of the JET-I Pro EX V2.0 is what's mostly been changed from the first version. While the first version is mostly covered in knurling, the V2.0 has kept the knurling to the front 2/3 of the battery tube while the rear 1/3 has grooves which makes it slightly more comfortable when the flashlight is held in a cigar-style grip. The knurling on is average in terms of roughness, being rougher than the NovaTac's but smoother than SureFire's. The battery tube also has a clip which slots into a small notch at the front end. The clip is held in very tight in this notch and takes considerable if you want to remove it. The clip allows for head-up oriented carrying of the flashlight and also has a small loop at the end which allows for lanyard attachments. The coating on the exterior of the battery tube, and also the entire flashlight, is coated in dark gray Type 3 anodizing. The finish is very well done and smooth throughout with no marks, scratches or any other inconsistencies to be found. The interior wall of the battery tube is uncoated and well-polished. It's wide enough to accommodate some high capacity AA cells which may be slightly thicker than regular alkaline AA cells. The threads at the rear end of the battery tube are anodized which means that loosening the tail cap will effectively lock-out the flashlight, preventing it from getting accidentally activated while in storage. Again, a rubber o-ring sits just above the threads and keep the battery tube sealed. The threads on the rear end came dry, unlike those on the head. So it would be a good idea to lubricated these since you'll probably be twisting the tail cap more often. The tail cap houses a reverse push button switch and has a gold-plated "-" contact spring. Externally the tail cap has a band of knurling which helps with grip during battery changes and the end has 2 wide, rectangular holes for lanyard attachments. Finally, the rubber switch cap slightly protrudes out from the tail cap, however this switch cap is designed in such a way which allows the flashlight to tail stand quite stably on flat surfaces. The switch's clicking mechanism has an average amount of tactile feedback and resistance as well as a positive clicking sound.

If you're unfamiliar with any of the terms used in this review, click here for explanations on common flashlight related vocabulary.

The larger reflector which the JET-I Pro EX V2.0 provides a slightly narrow hot spot, though it still has usable spill beam for indoor use. The overall beam profile is actually very clean and smooth with the only artifact apparent being the dark ring around the hot spot. Beam color temperature has a very neutral white color on higher brightness levels and shifts slightly cooler at lower brightness levels. This is peculiar since Cree XR-E based lights usually have the reverse characteristic of it shifting to a cooler tint at higher brightness. It has an advertised output of 200 lumens at maximum and 2 lumens minimum.

As with all the new JETBeam flashlights, the JET-I Pro EX V2.0 uses the I.B.S. circuitry. The key feature to note is its infinitely variable brightness setting. In addition, it also has the strobe modes available as did the previous versions. Any of the brightness levels and strobe modes can be programmed into 3 "slots" if you will. Referred to as Mode A, B and C and are arranged in the following order. The circuit does emit a high frequency sound at certain brightness levels.

Off > Mode A > Mode B > Mode C

There is no memory feature as far as mode sequence is concerned, thus the light will always start on Mode A when first turned on.

Activating brightness ramping.
Simply half-press the switch 3 times within 1 second. The ramping always starts from 5% brightness, up to 100% brightness. As a reminder, the light blinks twice at 5% brightness, twice again at 50% brightness, and thrice at 100% brightness. When the 100% brightness level is reached, it cycles back from 5% brightness. Switch off the light for at least 2 seconds at the desired brightness levels and it will be set. No effects of PWM was noticeable even at the lowest 5% brightness level.

Activating strobe modes selection.
While in the brightness ramping mode, half-press the switch once. The light will cycle through all the available strobe modes in the following order. As with the brightness ramping, the sequence is cyclical. Switch off the light for at least 2 seconds at the desired strobe mode. Switch off the light for at least 2 seconds at the desired brightness levels and it will be set.

Ramps from 1Hz to 15Hz > Beacon > Double Blink > 100% S.O.S. > 5% S.O.S.

Reset settings.
While in the Strobe selection mode, half-pressing the switch once. The light will turn off although the switch is clicked on. Now, turn off the light for at least 2 seconds. The next time the light is turned on, Modes A (170 lumens), B (20 lumens) and C will be set as factory defaults.

Regulation is help very well running on 2x AA Eneloops cells as you can see from the graphs below while runtime at higher brightness levels are a little below average and gets more efficient at lower levels as with most LED based lights.

The Good - Very good output brightness and holds regulation nicely. Construction and finishing is well done with no apparent flaws to be found.

The Bad - Efficiency at higher brightness levels could be improved, though not as bad as JETBeam's previous single-cell models.

The Relative - Has a neutral white beam tint. Uses a reverse push button. Is able to tail stand. Pocket clip fits quite tightly and can be hard to remove.

Head (front view).

Head (side view).

Head (rear view).

Battery tube (front view).

Battery tube (side view).

Battery tube (rear view).

Tail cap (front view).

Tail cap (side view).

Tail cap (rear view).