These little Rovyvons have become my favorite small lights (I also have the i1R 2, TINI2, Nano, and K18).
I love the Nichia 219C color. I didn’t realize that it would be that important to me.
I ran runtime tests with just-off-the-charger, mounted on tripod, aligned to the highest lux reading. My Digi-Sense 20250-00 light meter was 45 inches from the light. I don’t have a light box. I captured IR temps with a Seek Thermal CompactPro. I ‘calibrated’ it against boiling water, and ice water, and it was within 1 degree of those objects.
I originally bought the A1x, and after burning my fingers with it (ha!), I wanted to see if the aluminum version was significantly different. I can happily report that the all-metal A3x never burned my fingers! (My original intent was to purchase another TINI2, but there was no stock. I have seen many Rovyvon posts, but thought they looked really ugly. I’m happy to report that the lights are much more attractive in person).
The A1x has a 330 mAh battery, and the A3x ‘only’ 260 mAh. The runtime results were interesting. I noted the times where the lux rate-of-drop increased, and used that as the ‘runtime’ on turbo. The A1x can go another minute or so, I don’t think that’s significant.
Here’s the lights, with the emissivity-normalizing electrical tape in place:
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Peak temp for A1x:
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Peak temp for A3x:
And an overview of both lights:
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Here’s a closeup of 2 runs for the A1x (consistent!) and the A3x:
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And runs till the switch turned RED (battery low):
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After these tests, I can unconditionally recommend the A3x as an excellent keychain light!
