The P100C2 is an all-new tactical flashlight with a standard one-inch body for weapons mounting. The T100C2 is fully regulated with both 18650 Li-ion and CR123A Primary batteries. 

Operation: Two modes of output, selected by turning the head:
  Turbo Mode: Constant 425 Lumens* regulates 2 hour to 50%
  General Mode: Constant 50 Lumens* regulates 14 hours to 50%
Features:
CREE XP-G Cool White S2 LED.
Max output: 425 LED lumens / 321 ANSI FL-1 lumen
Soft rubber tactical grip for a comfortable hold
New L.O.P. reflector shapes a good balanced beam
Heavy duty nylon holster and mil-spec para-cord lanyard 
IPX-8 o-ring system The T100C2 Mark II received a revised waterproof system. Now T100C2 Mark II operates smoother and still maintains excellent waterproof ability.
  Length: 5.6 inches (14.2 cm)
  Head Diameter: 1.25" (3.1 cm), Body Diameter: 1.0" (2.5 cm)
  Weight: 3.95 ounces (112 grams)
Included Accessories: Spare O-rings, User Manual