With an included 18650 3100mAh battery, the XT11GT Pro will shoot up to 2200 warm lumens from the CREE XHP35 HD LED out to 320 meters, for two minutes. Temperature protection will then kick in and step it down to 750 lumens with a nearly two hour runtime. The power button is on the tailcap, which you can remove in order to replace the battery as needed. Mode control is right under the power button, using Klarus's newest tail dual switch system to make controlling the XT11GT Pro intuitive and efficient.

Specifications:

• Output modes:
• Turbo: 2200~750 lumens/2min+2hr*; 320m; 25600cd
• High: 400 lumens/4hr; 134m; 4500cd
• Medium: 100 lumens/11hr; 67m; 1125cd
• Low: 10 lumens/150hr; 21m; 112cd
• Strobe: 2200 lumens/4hr
• SOS: 100 lumens/33hr
• LED: CREE XHP35 HD 6500K
• Impact Resistance: 1m
• IP Rating: X8, waterproof to 2m
• Working Voltage: 2.8-6.4V
• Charge Current 5V/1A
• Charge Time: 4hr
• Compatible Batteries: 1x 18650 (included) or 2x CR123A batteries
• Dimensions: 35mm (1.38") x 25.4mm (1") x 139.7mm (5.5")
• Weight: 122.8g (4.33oz)(w/o battery)

* = Turbo runtime testing done in laboratory setting. Actual runtime may vary.