Up for review is the Solarforce Masterpiece Pro-I , a "C" threads compatible turbohead.
Here are some of the specs from Sbflashlights.com

• Complete flashlight head assembly product with premium CREE XR-E (WC-R2) LED

• Powerful and extreme output up to 275 lumens*

• 18650 battery x 1, at approx. 200 lumens: 2.5 hrs
  
• 18650 battery x 2, at approx. 275 lumens: 1.5 hrs
  
• High strength aluminum alloy body with Mil-spec hard-anodized finish
  
• Max. Input voltage: up to 16V for high flexibility in battery configurations
  
• Length, largest diameter: 82.5mm, 57mm
  
• Weight: 185g

  
  **IMPORTANT INFORMATION:  To reduce the risk of damage please install the Solarforce Masterpiece Pro-1 Head first, then insert batteries from the tail end.
  
  here is the light:
  
  
  here is the head, sitting in front of a bunch of lights ;)
  
  
  
  
  
  
  
  
  very well fluted head-- edges are sharp, but no razor or misshapen edges.
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  Size Comparisons:
  
  
  
  
  Comparison Beamshots:
  holes are typical -- throwers don't look good close range.
  
  
  
  White Wall Shots:
  Shutter Speed is not specified -- the white wall shots are meant to show artifacts, rings, etc in the beam, not for brightness comparison.
  
  
  
  
  
  Outdoor Beamshots:
  
  
  
  
  Runtime:
  
  interesting jumps. I am unsure why the light does this, it looks like an attempt at better regulation?
  I am unable to do a runtime on 2xRCR123A, I currently don't have 2 AW cells on hand.
  
  Impressions:
  The Solarforce Masterpiece Pro-I is Solarforce's first attempt in making a C-compatible turbohead. It does not disappoint. From my archived beamshots, it appears to beat the Tiablo A10-G in throw. Interestingly enough, it appears that the Pro-I either uses a smiliar or the same reflector as the A10-G, as it fits perfectly in the ACE-G head (A10-G/ACE-G had compatible parts). I don't have the A10-G anymore, so i'll have to depend on someone else for comparing. The disadvantage I see with this head is with it's performace on a single Li-ion cell, the head drives the emitter at a lower current at the lower voltages.
  
  The head pairs very well with a Solarforce L2P body, there are no gaps or any oddities when the head is attached. Attaching the head, though, makes the light top heavy -- I recommend you purchase a clip along with the head to help with grip.
  
  Sadly, the dropin isn't really a standard one, but proprietary, but, I am under the impression that Solarforce is in the process of creating a SST-50 dropin for this head. :popcorn:
  
  There really isn't too much to write about an attachment -- the pictures should speak for themselves.
  
  The head is currently available at sbflashlights.com for 89.99 USD , and, for a limited time, a free L2P body is included for a turnkey  package. -- just add the battery.