I just purchased my 1st light from Vinh, and my 1st Sunwayman. It is the C20C, a turbo, h,m,l, strobe, sos, XM-L2 18650 light, and one of the smallest out there at only 4.1” Vinh gave it a current boost to about 1200 lumens and dedomed the emitter. A quality light and a gorgeous tint. $70 on sale. The quality of this offering is dangerous, could become habit forming!
That is NICE! Really looks compact nice finish side switch and cranked up !was the 70.00$ price before or after being modded.
$70 after modding, on sale. I believe it sells for $59 stock. I figured it was a GREAT deal so pounced on it 
Also has a low battery light, and a lockout mode. Very compact!
The C20C makes a really nice host. I’ve got a couple I modded. Both use DrJones lumodrv firmware. One has an MTG2 at 3 amps with zener diode mod. The other has triple XPG2 with a FET modded driver. They’re very compact and feel nice in the hand.