I got mine (Cats Eyes) on line. I actually got two pair, red light only, fifteen bucks apiece. I use them both for observing, the one on the cap for messing with the lenses, drawing objects or finding something, and the other one is a backup that I put in my hand for reading or looking at star charts. They are pretty handy, use the 2016 round flat batteries and are "bright" only when I put brand new batteries in them and they usually last at least a couple months. And that's a lot of use. Those of you that know me can vouch for that.
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