The Sekonic L-208 I had used only one 2032 battery.
They are reliable, easy to use and very portable. Just beware of dropping it. They die on impact.
There's an older, selenium model: the L-86. That's one tough little bugger! I've dropped mine just a couple of times and it's still ticking. And it ticks well indeed!
I guess now the tide turned. Just get a meter or the meter app and have fun!
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