Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month
Bright LED. Textured reflector - no sharp edges of the central spot. Quite wide background illumination. Good driver with configurable modes (I have switched off SOS ans strobe by soldering two stars on the driver board). Positive contact has a spring. Threads are greased.
Reflector can not be changed easily (diode mount is threaded in reflector body). Bad thermal contact of the drop-in module (contact to the case only by the edge of the reflector. This is not good for such powerful diode.
Similar flashlight (same diode, 18650, little bit different case - C2) can be bought much cheaper. I have managed to buy for 15 USD with much better thermal contact and replaceable reflector.
Ok for DIY, but not recommended to use at highest power without some modification of the diode cooling.
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