The TK30 flashlight utilizes a Cree MC-E multi-chip LED, and delivers an amazing 630 lumens of brightness powered by four CR123A batteries or two 18650 rechargeable batteries (with included extension tube). With outstanding performance and brightness, the TK30 meets all the requirements for a high performance flashlight - your best choice for outdoor searching, hunting and exploring.

Features: 

• Digitally regulated for constant output
• Intelliegent memory function
• Made of aircraft-grade aluminum
• Durable Type-III hard-anodized finish
• Waterproof to IPX-8 standard
• Toughened ultra-clear glass lens with anti-reflective coating
• Tactical tailcap switch with momentary-on function
• Included accessories: Lanyard, Extension tube, Spare o-rings, Rubber switch boot.

Output and Runtime:

Three sets of modes, two types of output for each mode, selected by turning the bezel 

• Two 123A batteries (runtimes longer with one 18650 rechargeable battery)
  • Searching Mode: 100 Lumens (5 hrs) >> 370 Lumens (1 hr)
  • Camping Mode: 12 Lumens (30 hrs) >> 175 Lumens (2.7 hrs)
  • Hunting Mode: Strobe (2 hrs) >> 370 Lumens (1 hr)
• 
  
• Two 2500 mAh 18650 rechargeable batteries (with extension tube)
  • Searching Mode: 100 Lumens (16 hrs) >> 630 Lumens (1.5 hrs)
  • Camping Mode: 12 Lumens (90 hrs) >> 175 Lumens (8.4 hrs)
  • Hunting Mode: Strobe (3 hrs) >> 630 Lumens (1.5 hrs)