Operations

ON/OFF
The big button in the tail is the power switch and the small one is the mode switch.
Press the power switch gently for momentary lighting or until it clicks to activate and lock the TK35. Press it again to turn the light off.

Mode selection
Press the mode switch to cycle through five different brightness levels from Turbo→ Eco→ Low → Mid→ High.

Strobe mode
With the light on, press and hold the mode switch for 1 second to enter into Strobe mode.

SOS mode
With the light on, press and hold the mode switch for about three seconds to enter into SOS mode.

While in Strobe or SOS mode, a single press on the mode switch returns you to the non-flashing mode.

Intelligent memory circuit
The Fenix TK35 memorizes the last brightness level used in the general mode, but it will not remember the Strobe mode or SOS mode. The next time you turn the flashlight on, it will activate the last brightness level you selected.

Over-heat protection
The light will accumulate a great deal of heat when working in the turbo brightness level for a long time. In order to avoid any potential safety hazard, TK35 will transfer into the high brightness level automatically after a 30-minute working time in the turbo brightness level. If the turbo brightness level is needed, please reset it again.

Low-voltage warning function
The TK35 has a low-voltage warning function. When using the 18650 Li-ion battery, low voltage is checked, the flashlight enters the lower brightness level; if low voltage is checked in the Low brightness level, it will blink three times per second every five minutes. In this case, the battery should be replaced or it will cause damage to the battery. To ensure normal use, the flashlight will not turn off automatically until the battery runs out completely. This function will not support 16340 LiFePO4 batteries or CR123A batteries.