[Chao]

This new LX2 was designed to replace the surefire L2. New smooth, fluted body, TIR lens and with 200 lumens on high setting…



Features:
• Length: 5.4”, Bezel:1”
• Total Internal Reflection (TIR) lens
• Output & runtime:
High beam: 200 lumens/2hrs
Low beam: 15 lumens/47 hrs
• 2xCR123A
• Two-way clip permits light to be carried bezel up or down
• Two-stage tailcap switch—press for momentary-on low, press further for high; twist for constant-on at either level
• Waterproof to one meter for up to 30 minutes
• Adjustable lanyard included

Lux readings at 1meter:
High: 9280 lux (CR123Ax2), 7550 lux (14650 Li-on)
Low: 659 lux (CR123Ax2), 660 lux (14650 Li-on)

LX2 head is E-series thread comparable




LX2 head can fits Surefire E-series body, however, the LX2 circuit is in the head, and the 2-stages is controlled by the resistor in the tail cap (see#17 for the detail, thanks Size15's), so LX2 head +E-body will only have high beam.
Single level output head, for example, L4 head can uses LX2 body to make 2-level output, my 120 lumens L4 head + LX2 body is just perfect, low beam looks like 50-60 lumens, very bright enough for general use and with longer runtime.

Beam pattern is like E2DL but with bigger hotspot
Because of using TIR lens, the LX2 has big, round and bright hot spot with decent side spill like E1B, E2L and E2DL did, My LX2 has the yellowish tint; I have some SF lights that look yellowish and its fine for me.

LX2 is brighter than 120 lumens E2DL
LX2 is definitely brighter (either throw and total output) than my E2DL!!! Followed are beamshots comparisons.

5m beamshots (left to right: Fenix TK10, SF E2DL, SF LX2)


5m lower exposure



10m beamshots (left to right: Fenix TK10, SF E2DL, SF LX2)


10m lower exposure





Low level comparisons, from left to right are E2DL, L1, LX2. The LX2 15 lumens low beam is a little brighter than the L1 low (10 lumens).

LX2 vs. Fenix TA30
5m


10m

This LX2 is very bright, it’s even a little brighter than my Fenix TA30 by ceiling bounce test, if judging from the beamshots shown above, LX2 and TA30 have similar throw, and although the spill in LX2 is not as bright as TA30, however, the LX2 put more of it’s light into the big hotspot.

Almost 2 hrs regulation in high beam

Runtimes are shown in the graph, the high level using primary cells was around 2hrs, this is same as claimed by surefire, so I would expect the low beam runtime will close to 47 hrs. I also tested 14650 li-on in high beam (17670 does not fit), has 80% brightness compared to the primary cells, not bad, still very bright.



Here I would like to show the E2DL runtime graph again for compare, looks like the LX2 has different circuit in the head.


Surefire did a good job in the lumens/ runtime rating of this LX2, I am very happy that I bought this light and very satisfied after playing it for a week. So far I have nothing special for bad, just a minor thing, the long clip is too long to rub the tailcap, but this not bother me too much.