Just noticed this LusteFire 2013 on MF. Looks and measures exactly same as Convoy S3. Although with Convoy you can choose your emitter/driver combo for around the same price.
Never heard of this LustyFire brand but I saw a recent thread on a TK70 clone they make: LusteFire 3XU2-X3.
Also noticed this UltraFire SH-F12 seems like a try for a clone of the Roche F12 (only its longer).