Looks interesting - especially with the 3 dollar price tag! mind, you, for $25 you can get
a petzl e-light which weight basically the same amount (.95 grams) and has user replacable CR2035 batteries. Your critter definately has the elight beat for price though!
I've ceased wanting "tent illumination" a long time ago since LED headlamps came out since they are fine to read by.
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