I had read a few reviews on the Nano and people were saying that the twist on/off top would unscrew in their pockets and spill the batteries. That was the only complaint that I read. One of the local stores had them on sale for $4.95 (originally $6.95) I bought 1 and haven't had the first problem with it. It's part of my EDC and gets banged around pretty good in my pocket. Do Pico lights have the problem of the top unscrewing?
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