River Rock 0.5watt 2x AAA from Target for $9.99
It's available in this semi matte black and a shiney silver alumium.
Size compared to some known lights -
Vs. gen 2 MJLED drop-in for MiniMag 2AA
Vs. Nite-Ize LED Drop-in for MiniMag 2AA
Vs. 8LED 1AA "Xnova" New
Vs. Fenix L1 v2.5 (Non-Premium)
Current draw at end of beamshots -
2x Duracell AAA supplied with light
Open-circuit = 1.552V and 1.553V
Current draw ~75mA.
Comments: in daylight when I first got the River Rock 0.5w the beam seemed very purplish-blue, at first I thought it had a very purple tint. I've now gotten used to it, and it doesn't seem so purple any more.....
Not shown in the beamshots the central hotspot does have a donut ring of purplish-blue.