The EK1 is Skilhunt's take on a twisty keychain light in the style of the CooYoo Quantum. It has USB-C charging, optional high CRI, and a larger battery than most, but the battery isn't field-replaceable.

The Astrolux K1 is a keychain light with white, UV and red emitters, an integrated Li-ion battery and USB charging. There's a choice of a cool white Cree XP-G3 or neutral white 90 CRI Nichia 219C and a variety of body colors. It's prone to activation in the pocket, and quality could be better. It does have a lot of features for the price though.