Arghh, I just posted this but it did not go through, so here it is AGAIN...
I just spotted this TK45 clone at AliExpress (also available here). Appears to have a very similar unique design with three separate heads for each emitter, except this model has XMLs, and can run either 2x18650 or 2x26650 cells. Looking at the pics below, the designs are very close, particularly the heads with similar square cut crenulations and grooving.
Claimed output is likely over rated given that XML's are in the 900 lumen range, so 3 x 900 = 2700 at best. Also unknown is the drive current, so it could potentially be under driven resulting in lackluster performance. It seems substantial in mass at 473g, which is heavier than the TK45 (324g). So theoretically, if the heatsinking was adequate, it could be driven pretty hard.
It also has a tailcap switch instead of side switch, but in the pic below, it sort of looks like there is a side switch, I really can't tell. It may just be loop to attach a lanyard, but it's in a really weird location.
EDIT: Thanks to Darkside's link, the light is also available here. Additional pics confirm the lanyard attachment is in the neck. Sorry folks, no side switch on this one.
TK45 review by selfbuilt at CPF here
New 4500 Lm 3x CREE XM-L T6 LED Flashlight Torch Lamp 30W 2x 18650 /2x 26650 Battery
Brand: UniqueFire
Bulb: CREE XM-L 3xT6
Reflector:Mirror reflector
Mode: 5(High/Mid/Low/Strobe/SOS)
Lumen: High mode:4500lumens/ Middle mode:3800Lumens/ Low mode:1200Lumens (integrating sphere measured lumens)
Color temperature:High mode:7140K/Middle mode:7100K/Low mode:7760K
Battery: 2x18650 or 2x26650(not included)
Voltage: 7.4V-8.4V
Crust Material: Aluminium alloy
Color: Black
Switch: Press tail-cap button on/off
Waterproof: Ordinary waterproof
Accessories:1x Package,1x lanyard
Size(mm): 252(Length)x24.28(Head Diameter)x35.54(Body Diameter)
NetWeight(g): 473 (set)
Uniquefire 3 x XML
TK45 3 x XPG