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Details.
Even if working voltage of batteries is too low to run the common bulb of
your flashlight, a special electronic circuit uses all remaining energy and allows continuing LED working even for days.
The integrated switch clicks into 3 different positions:
- Pos. 1: for white LED use - Pos. 2: for red LED use - Pos. 3: for common bulb use
There is no filament contained in LEDs as in a common bulb. That´s why a LED works up to 100.000 operating hours.
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