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Packaging

Package arrived in a standard brown envelope. Light itself comes in a blister pack with nice instructions and accessories.


Contents
1x JETBeam C-LE V1.2
1x Generic nylon wrist strap
2x Foam rings
1x Spare rubber o-ring

Construction

This review of the C-LE V1.2 is an update to the one done for the V1.0 because they're very similar. Differences between V1.0 and V1.2 are listed at the end of each section.

The first thing I noticed when looking straight into the head is a very pronounced silver reflection at the bottom of the reflector. It is very even all around and shows the practically perfectly aligned emitter and reflector. Also, the reflector sits on top of the XR-E's silver ring instead of around it on the PCB. The aluminum reflector has a medium orange peel texture, consistent and well done finishing. The lens is advertised as AR coated glass. From the exterior side, I was unable to find any evidence of AR coating. As far as flashlights go, the inner side is more important in terms of AR coating which will result in more light out the lens. Perhaps the inner side of the C-LE's lens is coated but I couldn't check this as the two segments of the head module are sealed together, probably with epoxy or similar substance.

The entire C-LE body is noticeably smaller than most other single AA lights, probably because it's a twisty. It's a good 1.5cm shorter than the LumaPower LM301. Coating on the body is very well done, smooth and evenly coated throughout. As an added bonus, the coating is done in Type 3 anodizing for better durability. The anodizing color is a very dark gray, almost black. Majority of the head and battery tube is finished with knurling, a good design idea since this is a twist activated light. Everything looks good on the exterior, no machining flaws, sharp edges or marks. At the tail end you will find two small holes for lanyard or key rings. Now, on to the one really bad flaw of this light. The threads, they are very rough and will initially cross thread quite often. They also tend to make lots of squeaky and grinding noises. I had to repeatedly screw/unscrew the head on mine about 50 times before they started to smoothen out a little. Keep doing this while occasionally cleaning out the metal dust produced between the threads with a stiff brush till no more rubs off. The threads should be pretty smooth now, apply some lubricant on the rubber o-ring and it's done. Which leads to another point, the rubber o-rings did not come lubricated. This is actually a good thing, because it doesn't cause the metal dust to stick on the threads making it easier to clean out after breaking it in.

Construction differences between V1.0 and V1.2.

1. Anodizing on the battery tube has a subtle shade of brown, and the head is more of a gray shade. Compared to V1.0 which head had a slight shade of brown instead, and body was more gray.

2. Threads on the battery tube of the V1.0 had a yellow colored chemical coating, the V1.2 doesn't.

3. Threads are thicker on the V1.2 than the V1.0.

4. The V1.2 comes with thicker translucent rubber o-rings, the V1.0 came with a thinner black colored ones.

5. Lanyard hole at the tail end is lop sided on the V1.2.


Output

The C-LE has 5 advertised modes. Cycling between modes is done by switching the light on and off within 2 seconds.

The operating modes are as follows;
"Off" > "Middle" > "Low" > "High" > "Strobe" > "S.O.S."

The output is good for a single AA light, overall it's very balanced. The intensity is slightly less than the XR-E's potential on an AA cell but this is made up by better runtime. The output stays nice and white through all the output levels and doesn't turn a warm yellow tint on "Medium" or "Low". This is partly due to the use of PWM for the lower levels instead of lowering the drive current to the emitter, also I'm sure the emitters used in the C-LE are of good tint selection as well. As the battery runs down out of regulation, the PWM kicks in and the output level decreases accordingly. When the battery gets critically low and about to die out, the light warns you by strobing twice in quick succession each time it's turned on.

There is one aspect of the output performance which bothers me, that is the PWM used for the "Medium" and "Low" levels. To me it is noticeable when I occasionally glance at the bezel, or use it to pan across an area. It's even more noticeable when the light shines on reflective surfaces. This is my personal observation, you may not notice the PWM as different people have different sensitivity to it.

Output differences between V1.0 and V1.2.

1. PWM is indeed improved over V1.0, a higher frequency is used thus the pulsing on lower levels isn't as obvious.

2. The "Beacon" mode is no longer available.

3. V1.2 has a memory feature which remembers the last output mode used if it's kept on for more than 2 seconds.

4. Output intensity on high is slighter brighter on the V1.2 than the V1.0, by about 200 lux. However runs for 20 minutes less.

5. Runtime on medium lasts for about 1 hour longer on the V1.2 than the V1.0.

6. Fellow reader Bryan Spofford has tried running a 3.7V 14500 li-ion cell in a JETBeam C-LE V1.2. Basically it worked for about a minute and then died. Unlike the V1.0 (with the beacon mode) which can run on 14500 cells, the V1.2 can't. Stick to using NiMH, alkaline or lithium AA cells.


Conclusion

The Good - Great quality exterior finish with Type 3 anodizing. Nice white tint on all output levels. Lots of modes for in a small form factor running on common AA cells.

The Bad - PWM used for "Medium" and "Low" levels are quite noticeable to me. Very badly finished threads, although it can be fixed by breaking it in.

The Relative - Uses twist action for on instead of a push button switch. PWM results in a consistent white tint on all levels, the trade-off being a noticeable modulation effect.

There were some problems with the C-LE V1.2 sample I received.

1. With 1.2V NiMH cell, tested with various brands.
- Modes come on in random order.
- Sometimes doesn't turn on at all.

2. With 1.5V Alkaline cell, tested with various brands.
- Same random order as with NiMH cells.
- Sometimes doesn't turn on at all, happens more frequently than with NiMH cells.
- Sometimes strobe comes on with low light level.

Here's a video of all the modes and the effect this light's PWM has on my camera.


Gallery (in order of assembly)

Head module (front view).

Head module (side view).

Head module (rear view).

Battery tube (front view).

Battery tube (side view).

Battery tube (rear view).


JETBeam C-LE V1.2
July 3, 2007
Overall
7.6

Construction
    7
Output
    8
Value
    8

Availability
JETBeam.com.cn
Beam Profile
Medium Spot
Coating
Type 3 Anodizing
Cost
$24.50
Dimensions
8.5cm long
1.9 cm at widest Ø
Lens
AR Coated Glass
Light Source
Cree XR-E
Output
1x AA 2000mAh Eneloop
Medium Spot 341 Lux
Medium Spill 20 Lux
Low Spot 87 Lux
Low Spill 9 Lux
High Spot 1043 Lux
High Spill 48 Lux
Power
1x AA
Reflector
Textured Aluminum
Runtime
1x AA 2000mAh Eneloop
Medium 05:34 to 50%
High 01:34 to 50%
Low 20+ hours
Switch
Twist