Manufacturer's product description:
Model: JET-III PRO (3.7V Special Version)
LED: CREE 7090 XR-E (Q5 bin)
Max Output: 225 Lumen (Torch Lumen)
Reflector: OP aluminum reflector
Lens: Sapphire crystal
Material: T6061 T6 aircraft aluminum alloy
Finish: HA III Military grade hard annodized
Battery: one 18650 rechargeable Lithium Battery
Input voltage: 0.7-4.2V
Switch: Reverse push button switch
Waterproof: Accord to IPX-8 standard
Dimension: Bezel diameter 33mm, Tail diameter 24mm, Overall length 128mm
Weight: 115g
Patented Product.

Output & Runtime:
18650 Rechargeable Lithium Battery
Max Output: 225 Lumen, lasting for 1.5 hours
Default Mode A Output: 180 Lumen, lasting for 2 hours and 15 mins
Default Mode B Output: 20 Lumen, lasting for 21 hours
Min Output: 2 Lumen, lasting for 150 hours

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www.tigerhotdeals.com circuit test results:

- 800mA output at 70% light