Taken from another site.
NEW MODEL: 860 Lumens, with the latest Cree XM-L(U2) LED with a 340 meter long-throwing beam.
Fenix TK35 is a convenient extremely high intensity multifunctional flashlight. Using the Cree XM-L(U2) LED, it can deliver a significantly high output. Offering 4 brightness levels, strobe and hidden functions, it can be powered by the frost-resistant CR123A lithium batteries or large-capacity 18650 rechargeable Li-ion batteries. with the unique batteries holder and the dual switch in the tail cap, the TK35 shows great power in various outdoor activities, such as exploring, camping, searching, caving, etc.
Uses XM-L (U2) LED, max 860-lumen output Powered by 4 CR123A or 2 18650 rechargeable batteries 4 brightness levels and 2 flashlight modes, dual switch in the tail cap Low-voltage warning function Digitally-regulated output (maintains constant brightness) Reverse polarity protection to protect from improper battery installation Low-voltage warning function to remind users of low power Toughened ultr-clear glass lens with anti-reflective finish Intelligent memory circuit which automatically memorizes the brightness level when turned off Over discharge protection circuit protects the batteries effectively Patented battery holder made of PC quality material - wear resistant and shock resistant Max 340 meter long-throwing beam Made of durable aircraft-grade aluminum, premium Type III hard-anodized finish, scratch resistant and wear resistant Waterproof to IPX-9 standard 165mm (length) x 44mm (diameter) x 52mm (head) 275 gram weight (excluding batteries)
Notice: The above-mentioned parameters (tested in lab using quality CR123A primary lithium batteries are approximate and may vary between flashlights, batteries, and environments. TK35 will automatically enter into the high brightness level from the turbo brightness level after a 25-minute working time with the security setting. So the runtime of the turbo brightness level is the accumulated time.