Website says PVD...
Is there a point/advantage to making it out of copper then somehow coating or coloring the surface?
There are 3 copper models and 3 Titanium models, they both offer PVD.
Olight S-Mini CU
"
The limited edition S Mini Baton Copper, powered by one CR123A battery, available in various finishes and colors : raw copper, rose gold and black."
Also available as : Olight S Mini Titanium ( Polished, Bead Blasted and Rainbow PVD )
In the Copper Line, Raw is uncoated Copper, RoseGold is PVD over copper, and Black is PVD over copper,
In the Titanium line, the Rainbow finish is PVD over Titanium.
Some people dislike the tarnished look of copper, and the smell on their hands from handling it. Rose Gold is a way to get a copper look, that stays shiny, and does not smell. However, Copper kills germs, PVD does not.
More copper germicidal
info links in this thread.
Copper is more Efficient than Titanium, for conducting both heat and electricity. Copper will warm up evenly and dissipate heat more quickly. Titanium traps heat, one end of a Titanium light will stay cooler and the other end will get hotter. The hot end of a Ti light will get hotter than on a Copper model.
In the post below, the copper light has 50% longer runtime on High.
The Titanium runtime is
33 minutes, the Copper gets
50 minutes.
Some interesting findings were made especially in the highest mode. The Ti seems very inefficient compared to the Copper. The problem lies in the driver or the titanium body, since the copper version works well with the electronic tailcap from the Ti.
The copper version is … heavier at 34 g vs. 23 g for the Ti.
Copper tool also is significantly more efficient at high. It produces 70 % more total lumen hours on high. On mid the difference is gone. Without a cooling fan the Ti overheats and starts flashing the output at 12 minutes. Copper works much better because of its higher mass and heat conductivity.
