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  • Good zoomable light for its price

    posted by wipe2002 on 01/25/2010

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week


    + As bright as Cree lamps in a same class
    + Compact size (length is 93 / 100 mm min./max. zoom)
    + Quite wide zoom range (see below)
    + Decent switch
    + Reasonable price
    + Uses 1xAA battery
    + No strobe or SOS modes
    + Has a real driver circuitry (which is visible inside)
    + Versatile lanyard
    + Tailstands (not very well when a key ring is installed but still)


    - Moving part of the body feels loose. I doubt it is water resistant even it has o-rings on both threads. Looseness makes it feel cheap. Othe way machining looks ok.
    Some minor things:
    - No forward-clicky switch as in Romisen lamps
    - Only works with AA batteries
    - Single mode only - no "moon" mode with >10 hours of working time


    I compared this "3W" flashlight to the other zoom torches I have bought from DX: C78 & RC-C6.
    From a distance of 80 cm their spot's diameters are (in max./min. zoom position):
    "3W" (this one): 7 / 70 cm
    C78: 8 / 50 cm
    RC-C6: 5 / 90 cm
    So "3W" has bigger zoom range than C78 but smaller than what RC-C6 has.
    I seemed to me that "3W" would give little more light than C78 or RC-C6 (latter uses a 3.7 V lithium cell). Differences are very hard to see with an eye so I adjusted their spots to a same size and used my lux meter. Max. value was:
    "3W" (this one): 201 lux
    C78: 122 lux
    RC-C6: 184 lux
    C78 has bluer tint than RC-C6 and "3W" has yellower.
    Driver circuitry works down to 0.45 V taking 1.1 amps then. With 1.5 V it takes more than 2 amps (from my 2 A lab power supply).


    Basic zoom lamp. Quite ok.

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