The Fenix HM75R Pro is a multi-purpose headlamp built for demanding outdoor and industrial use, delivering a maximum output of 3500 lumens and a beam distance of 398 metres, with a peak intensity of 39852 candela. Spotlight, floodlight, combined spot-and-flood, and red auxiliary light cover a wide range of scenarios, driven by a Luminus SFT90X LED (spot), two Luminus SST25 LEDs (flood), and an OSRAM red LED. Powered by an included Fenix ARB-L21-5500 21700 lithium-ion battery, it offers a maximum runtime of 516 hours on the low floodlight mode, recharging through a USB-C port in as little as 90 minutes. A rotary switch paired with a button control system keeps mode selection simple, while an intelligent proximity sensor automatically lowers brightness for safer close-range use. Built from lightweight magnesium alloy, the body is rated IP68 with 2-metre impact resistance.
Features
High Output, Long Throw: Delivers 3500 lumens and a beam distance of 398 metres, with a peak intensity of 39852 candela.
Four Light Modes: Spotlight, floodlight, combined spot-and-flood, and red auxiliary light suit a wide range of outdoor and industrial scenarios, each with four brightness levels.
Extended Runtime: Runs for up to 516 hours on its lowest setting, powered by an included Fenix ARB-L21-5500 21700 lithium-ion battery.
Intelligent Proximity Sensor: Automatically lowers brightness to a safer level when an object is detected within close range, and restores it once clear.
Package Includes
1 x Fenix HM75R Pro
1 x Fenix ARB-L21-5500 5500mAh Protected Rechargeable 21700 Li-ion Battery
1 x USB Charging Cable (USB-A to USB-C)
1 x Spare O-ring
1 x User Manual
Key Information
Feature
Details
Primary Light Sources
Spotlight: 1 x Luminus SFT90X Cool White LED Floodlight: 2 x Luminus SST25 Cool White LEDs
Auxiliary Light Source
1 x OSRAM GR QSSPA1.23 Red LED
Power Source
1 x Fenix ARB-L21-5500 5500mAh Protected Rechargeable 21700 Li-ion Battery
Recharging Method
USB Type-C
Material
Magnesium alloy
Warranty (Headlamp)
5 years
Warranty (Battery)
1 year
Warranty (Accessories)
1 year
ANSI/PLATO FL1 Specifications
Feature
Measurement
Maximum Light Output
3500 lumens
Maximum Runtime
21 days 12 hours
Maximum Beam Distance
398 metres
Peak Beam Intensity
39852 candela
Impact Resistance
2 metres
Ingress Protection Rating
IP68
Dimensions
Feature
Measurement
Weight
214 g
Additional Data
ANSI/PLATO FL1
Turbo
High
Med
Low
Max Output
3300 lm
800 lm
350 lm
50 lm
Max Runtime
3h 33min*
6h 28min
16h
68h
Max Beam Distance
398 m
189 m
124 m
47 m
Peak Beam Intensity
39852 cd
8968 cd
3861 cd
549 cd
Note: According to the ANSI/PLATO FL1 standard, the above specifications are from the results produced by Fenix through its laboratory testing using one Fenix ARB-L21-5500 battery under the temperature of 21±3°C and humidity of 50% - 80%. The true performance of this product may vary according to different working environments and the actual battery used.
*The Turbo output is measured in total of runtime including output at reduced levels due to temperature or protection mechanism in the design.
ANSI/PLATO FL1
Turbo
High
Med
Low
Max Output
1500 lm
400 lm
50 lm
5 lm
Max Runtime
3h 39min
11h 21min
102h 45min
516h
Max Beam Distance
85 m
42 m
15 m
4 m
Peak Beam Intensity
1805 cd
448 cd
56 cd
4 cd
Note: According to the ANSI/PLATO FL1 standard, the above specifications are from the results produced by Fenix through its laboratory testing using one Fenix ARB-L21-5500 battery under the temperature of 21±3°C and humidity of 50% - 80%. The true performance of this product may vary according to different working environments and the actual battery used.
ANSI/PLATO FL1
Turbo
High
Med
Low
Max Output
3500 lm
1200 lm
400 lm
50 lm
Max Runtime
3h 22min
4h 45min
14h 50min
56h 45min
Max Beam Distance
334 m
148 m
81 m
29 m
Peak Beam Intensity
27884 cd
5453 cd
1647 cd
207 cd
Note: According to the ANSI/PLATO FL1 standard, the above specifications are from the results produced by Fenix through its laboratory testing using one Fenix ARB-L21-5500 battery under the temperature of 21±3°C and humidity of 50% - 80%. The true performance of this product may vary according to different working environments and the actual battery used.
ANSI/PLATO FL1
High
Med
Low
Flash
Max Output
140 lm
30 lm
5 lm
5 lm
Max Runtime
8h 25min
74h 15min
366h
—
Max Beam Distance
30 m
14 m
6 m
—
Peak Beam Intensity
226 cd
47 cd
8 cd
—
Note: According to the ANSI/PLATO FL1 standard, the above specifications are from the results produced by Fenix through its laboratory testing using one Fenix ARB-L21-5500 battery under the temperature of 21±3°C and humidity of 50% - 80%. The true performance of this product may vary according to different working environments and the actual battery used.
Performance and Runtime Disclaimer
How to read the data: The outputs provided above are maximum outputs for each mode, and the runtimes provided are the time it takes to drop to 10% of the initial output. This is in line with the International Flashlight Testing Standard ANSI FL1.
Any visual representations (graphs) of the data are approximate only.
Read more
The actual output of the torch/headlamp is controlled by an in-built temperature regulation system. As the torch/headlamp heats up, the brightness will drop to prevent overheating. The Turbo modes of torches/headlamps usually drop down significantly after anything from 15 seconds to 2 minutes. High modes often also experience a drop down over time. Medium and Low modes, however, can be constant for very close to the length of time specified. As the torch/headlamp cools down, either from being turned off or from being used on a lower output level, you will be able to access higher brightness levels again.
Example: An output of 2000 lumens and runtime of 5 hours does not mean 2000 lumens for 5 hours — it means it starts at 2000 lumens and drops below 200 lumens after 5 hours of continuous use.
Turbo and high modes may be unavailable or limited as the battery gets low on charge.
Exact specifications can vary between torches, batteries, age and environments.
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