I like that tail, even though the light wont hang straight since the keyring is not in the middle
I also like the trit slot, although the trit may cost more than the light… choices are fun
Im not saying Sofirn should include a clip, but some people may want to source their own, if so, here is a possibility. I have not tried it and am not sure if this clip fits an E01, it resembles the clip on the Arc AAA
Maglite 2 AAA Mini Mag Pocket-Clip
here is Zebralight “potting”
more info on various types of “potting, encapsulating, and coating” types (epoxy, polyurethane, and silicone). Some are thermally conductive, some are for high temperature, most are waterproof, some are more resistant to other chemicals and solvents… etc:
https://www.epoxysetinc.com/product-reviews/potting-encapsulating-compounds/
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“Thermal cycling can take a toll on your electronics so can unprotected assemblies. Our potting & encapsulation can make a difference in your electronic components.”
HDS potting:
Fenix E01 potting