Something like SST-40 but Hi-cri and 4000K or less for SC31 Pro?

Flashlight Modding and DIY Parts
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I tested one 4000K and 2700K from Sofirn here , it’s with a beaded TIR lens so with a reflector the spot duv will be a bit greener.

The 3500K from Convoy (bin U6) will probably be the nicest although I haven’t tested it.