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The only good use case I’ve come across is looking at house numbers at night without lighting up the whole house. Generally I’m not a “it’s just fun to see far” kind of person.
And yes, I know there are better performing lights that cost less. I was already making a Wurkkos order and it just fell into my cart.
I've been planning on getting the Convoy L21B with CULPM1 emitter which equally gives a narrow beam but throws over a kilometer. Not because I need one but because I don't have one like that yet. It's a spotlight. If I need to see up close I'll use another torch.
Actually, I have an L21B in the mail, but with SST-20-DR (deep red) for wildlife spotting. My understanding is that the L21B in a white LED will have a slightly more "usable spill" than the TD01C but I'm not speaking from experience.