TN11 comes with one extender for using 3 CR123A batteries. To use 4 CR123A battery or two 18650 batteries, an optional additional extender is needed.

Specification:

• LED: Cree XM-L LED T6 with a lifespan of 50,000hours
• Use one 18650 or 2*CR123A batteries or 3 Cr123A.( one extended tube included )
• Rated operation voltage 2.7v to12v
• Crenellated SS bezel
• Removable SS clip
• Copper base plate for more efficient heat
• Shiny smooth reflector and get perfect beam
• Max light output: 830lumens.When use 3 or 4 Cr123A or 2 18650 rechargeable batteries. Max output for 10 minutes and then down to 85% (one extended tube are included in the package, additional extended tube is neede for using 4 CR123A or two 18650 batteries)
• Max runtime:745hours(0.2 lumens)
• Runtime: 75 minute for 1 18650 (2600MAH) down to 50%. 47minutes down to 50%(3CR123A )
• Max beam distance:355m
• Peak beam intensity:28900cd
• Impact resistance:1.2m
• Waterproof to IPX-8 standard
• 154mm(length)x41mm(bezel diameter)25.4mm(Body diameter)
• Weight:165g( without battery)
• Made of durable aircraft grade aluminum
• Premium Type III hard-anodized anti-abrasive finish
• Toughened ultra-clear glass lens with anti-reflective coating
• Battery reverse protection function. And batteries low indication(it will flash when voltage down to 2.7v)

Mode switch:
At loosen station of head.Screw the ring on the body (tighten→loosen→tighten→within 2s)to have the output from firefly mode→infinite brightness from5% to 89%)→slow strobe→quick strobe, you can lock out to select any of the mode you need by screw the body tighten to loosen within 0.5s