5-modde:Low 20% brightness -- middle 50% brightness --
high 100% brightness -- SOS -- Strobe
Bulb: CREE Q3 LED 5-mode
Battery: 1×18650 3.7V(not included)
Size(mm): 140(L)×31(D)X27(D)
NetWeight(g): 120/130
Switch: Tailcap Clickie On/Off 
Color: Black
Holster: 001 (not included)

4 Versions:
WF-503B +  P4......13.84 (USD)
WF-503B +  P4 5-MODE......15.69(USD)
WF-503B +  Q5......16.78(USD)
WF-503B +   Q5 5-MODE......18.65(USD)