On
Press and hold the switch for 0.5 seconds to enter spotlight mode, double click the switch to enter functional mode.

Off 
Press and hold the switch for 0.5 seconds to turn off the lamp.

Mode Switching

With the lamp switched on, press and hold the switch for 1.2 seconds to switch to another mode.

Output Selection

In Spotlight mode, with the lamp switched on, single click the switch to cycle through Low→Med→High→Turbo.

In Functional mode, with the lamp switched on, single click the switch to cycle through Red→Med→High→SOS.

Lock/Unlock

Lock: when the lamp is switched off, press and hold the switch for 3 seconds, the lamp will blink red 3times to indicate locked status.

Unlock: when the lamp is locked, press and hold the switch for 3 seconds, the lamp will be activated with 3 one-second red blinks and activated on Red Light mode.

In locked status, clicking the switch will activate 3 one-second red blinks to indicate locked status.

Intelligent Memory Circuit 

The headlamp memorizes the last selected output on spotlight mode. When turned on again the previously used output will be recalled. Each time the functional mode is entered with red light.

Frequency Sensing 

There is frequency sensing on Med and High output levels in spotlight mode.

1. Set frequency of step 150 times/minute as the standard. From 150 times/minute to 220 times/minute, the brightness increases proportionally with the frequency of step. When the frequency of step reaches 220 times/minute, the brightness will increase to 150% of normal brightness; when the frequency of step exceeds 220 times/minute, the brightness will remain at 150% of normal brightness.

2. When the frequency of step is lower than 150 times/minute, from 150 times/minute to 80 times/minute, the brightness decreases proportionally with the frequency of step. When the frequency of step reaches 80 times/minute, the brightness is reduced to 70% of the normal brightness; when the frequency of step is lower than 80 times/minute, it will maintain 70% of the normal brightness. When the frequency is detected to decrease, the brightness starts to decrease gradually after 10 seconds of delay.

Dual Distance Beam of Spotlight  

The spotlight features Dual Distance Beam that provides long-range illumination while maintaining up-close visibility.

Lamp Holder Angle Adjustment 

The angle adjustment range of the lamp holder is 90° up and down.

Intelligent Overheat Protection

The lamp will accumulate a lot of heat when used at Turbo output level for extended periods. When the lamp reaches a temperature of 55°C or above, the lamp will automatically step down a few lumens to reduce the temperature. When the temperature drops below 55°C, it will then allow the user for the reselection of Turbo mode. 

Low-voltage Warning

When the voltage level drops below the preset level, the headlamp is programmed to downshift to a lower brightness level until Low output is reached. When this happens in Low output mode, the lamp blinks 3 times every 5 minutes to remind you to timely recharge or replace the battery. 

Note: This only works with Fenix ARB-L18 Series battery.

Headband Assembly 

Note: The headband is factory assembled by default.

1. Adjust the headband by sliding the buckle to the required length.

2. Assemble top headband to better fix the headlamp. First fix the headband mount to the headband, then fix one side of the top headband to the headlamp holder, and the other end to the top headband mount.

Usage and Maintenance 

- Disassembling the sealed head can cause damage to the lamp and will void the warranty.

- Fenix recommends using an excellent quality Fenix battery. 

- If the lamp will not be used for an extended period, remove the battery, or the lamp could be damaged by electrolyte leakage.

- Take out the battery to prevent accidental activation during storage or transportation. 

- Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare.

- Periodic cleaning of the battery contacts improves the lamp's performance as dirty contacts may cause the lamp to flicker, shine intermittently or even fail to illuminate for the following reasons:

A: The battery needs replacing.

Solution: Replace the battery (Ensure battery is inserted according to the manufacturer’s specifications).

B: The contact point or contact of the battery or headlamp is dirty. 

Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.