This is a Chinese knockoff of the Optimus stove of yesteryear. The dry weight is about 1.25lbs. The burner holds about 3.5oz of fuel. The aluminum is a soft alloy and has a clear anodize finish.
The burner is dimensionally identical to the Trangia (don't confuse the Trangia with the Swedish military SVEA burner - they're different - see http://mysite.verizon.net/restoq6v/id6.html for more information). The burner does not have a simmer ring, but you can (and probably should) use the Trangia simmer-ring.
Note: without a simmer-ring, which can be used as a snuffer, you'll likely destroy the seal in the burner cap using it as a snuffer.
The following pictures will give you some vital stats. This Youtube video will show it in action http://www.youtube.com/watch?v=r6W88LECtcc
Judgement call on my part - save your money. I think the following two videos show better setups.
Sterno stove with alcohol burner - http://www.youtube.com/watch?v=eNXR0JG7Pmk
Backpacking Trangia setup - http://www.youtube.com/watch?v=LHYLXp562-Y
Dry weight of complete Ledmark cookset
Ledmark burner dry weight
Ledmark burner wet weight