Received my MR30 last night. I’m very pleased with this light so far. The emitter may be cool white, but it’s quite good- not the harsh blue of some lights (Wuben TO46R comes to mind). I was worried about mikobiker’s comment “PWM: at low level, detected to the naked eye:”, but I’m happy to report that my eyes don’t see the PWM at all.
The protected cell that comes with the light is too long for my Opus BT-C3100, XTAR WP-6, XTAR Dragon, and MiBoxer C8 chargers, but it fits easily in the new MiBoxer C4 Plus charger. And, of course, the lights internal charger works just fine.
One very nice feature is that while the light is plugged into the USB charger, you can still turn the light on. It is a single mode light and appears to be on the medium level. You can even remove the battery and the light will still work just on USB power alone.
I hope the next version of this light uses a USB C port. That’s about the only thing I want changed.