The NiteCore D11 makes a great EDC (Every Day Carry) light, now with the improved XP-G R5 LED. Nicely finished with sturdy construction, this light is reliable and ready when you need it. The piston drive switch is responsive and easy to use. The D11 now adds infinitely adjustable output rather than having discrete brightness levels as it's predecessor, the D10.

Features:

• Extremely minimal size and weight suitable for every day carry
• Fully regulated circuit, compatible with various batteries
• Impact-resistant optical lens with AR coating
• Made from 7075 military-grade aluminum
• Impact resistance with US MIL-STD-810F
• Mil-Spec Type III Hard Anodized finish
• Aggressive knurling maximizes grip
• Electronically controlled switching
• Waterproof to IPX-8 standard
• Able to tail-stand to act as a candle

Output & Runtime: 

Primary AA battery

• Max Output 145 Lumens (1.5 hrs)
• Min Output 3 Lumens (100 hrs)
• Strobe
• SOS
  
  

Operation:

Choosing Constant Output To choose your level of constant output, first turn on the light by tightening the head or (if the head is already tightened) by pressing the tailcap once. Once on, pushing and holding the switch will cause the brightness to ramp up/down.

Choosing SOS / Strobe To choose the "hidden" SOS or Strobe modes, first turn on the light. To access SOS, quickly double-press the tailcap (do not hold it down). To access Strobe, double-press the tailcap and continue to hold down the second press. SOS and Strobe modes are not "memorized," so the light will always turn on to whatever constant output you have saved.