FENIX HM51R Ruby V2.0 - Rechargeable headlamp

The second generation of the highly popular Fenix HM51R Ruby V2.0 rechargeable headlamp offers up to 700 lumens (ANSI) of neutral white light (4500K) with a range of up to 120 meters and also features red LEDs. It is powered by a single RCR123A rechargeable battery (included), which is recharged directly in the flashlight via a modern USB-C connector; alternatively, a disposable CR123A lithium battery (limited to a maximum output of 150 lumens) can be used for power.

In addition, the control button features an indicator LED so you will always know when to recharge the battery. The end of the flashlight is magnetic, so it can easily be attached to anything metal. The HM51R has nine different lighting modes, allowing you to choose between high power and long lasting (up to 120 hours).

The flashlight is powered by a digitally controlled constant current to guarantee constant light output even when the batteries are low (slowly discharging).

The all-metal construction ensures high durability, optimal cooling and is also fully waterproof according to IP68 standard up to a depth of 2 meters underwater. The practicality of the headlamp is enhanced by the ability to remove the light from the head holder and use it as a small pocket flashlight. In addition, the headlamp is equipped with a steel removable clip, so you can easily attach it to your pocket or strap. The Fenix HM51R V2.0 Headlamp is the ideal companion for a variety of sporting activities, outdoor excursions, and home and work.

The Fenix HM51R is a limited edition headlamp that is based on the Fenix HM50R headlamp and offers a number of improvements. For example, warmer light tint, magnetic tip, constant control in most modes, multiple red light modes and more. If you're interested in all the differences between the two models, check out the article Comparing the Fenix HM50R V2.0 and Fenix HM51R Ruby V2.0 Headlamps.

All flashlight parameters (lumen output, battery life, waterproof, range and shock resistance) are measured in accordance with ANSI/NEMA FL 1-2009.

Package Contents: HM51R headlamp, ARB-L16-700 battery, replacement o-ring, USB-C charging cable, steel clip

Warranty: 5 years on headlamp, 2 years on battery

Parameters:

• Premium Powerful Cree XP-G3 LED with neutral tint light (4500K)
• Lifetime 50000 hours
• Two red Everlight LEDs
• Five white light modes
• Four red light modes
• Measured with Fenix RCR123A 700 mAh Li-ion battery
• Uses a single Fenix RCR123A 700 mAh Li-ion battery to power it
• In an emergency, a single disposable 3V CR123A lithium battery can also be used to power it
• Digital constant power control
• Charge via USB-C connector on the side of the headlamp
• Charging time for a fully discharged battery is approx. 1.5 hours
• Smooth light cone with a range of up to 120 meters (3690 cd)
• Battery capacity indication and low voltage warning
• The flashlight has memory and always turns on in the last set mode
• Magnetic end cap, headlamp can be attached to anything metal
• Protection against reverse battery insertion (reverse polarity)
• Smartly designed holder also functions as a buckle if the headlamp is removed from the strap
• Comfortable perforated strap with reflective elements
• Simple one-switch operation
• Body made of high-strength A6061-T6 aerospace aluminum alloy
• Hard scratch resistant finish - Type III hard anodized
• Breathproof and waterproof to IP68 standard
• Insensitive to drops from a height of 2 metres
• High quality TIR optics with high light transmission

Power Modes:
Five white light modes: 700 lumens (0.5 hours)-> 400 lumens (1.5 hours)-> 150 lumens (2.5 hours)-> 50 lumens (8 hours)-> 3 lumens (120 hours)
Four red light modes: 5 lumens (36 hours)-> 1 lumen (100 hours)-> red flash 5 lumens (72 hours)-> SOS 5 lumens (72 hours)</p

Luminous flux: 700 lm
Range: 120 m
Dimensions: 66 mm length x 36 mm width x 32 mm height (including headlamp holder)
Weight: 80 grams (including strap and battery), 61 grams (without battery)
Material: high-strength aerospace aluminum alloy A6061-T6

Use
From the factory, there may be a black insulating cap inside the flashlight on the battery. Remove it from the battery pack before first use.
- Turn off the headlamp to the last used white light mode by holding the button for 0.5 seconds.
- Turn on the headlamp to the last used red light mode by pressing the button twice quickly.
- Turn off the headlamp by holding the button for 0.5 seconds.
While the headlamp is on, the power modes can be cycled through in the order of 3 - 50 - 150 - 400 - 700 lumens (when switched to white light) or red 1 lumen - red 5 lumen - red flash - red SOS (when switched to red light) with short button presses. The flashlight has a memory and will always turn on in the last set mode (applies to both white and red light).
Overheat protection: Operation on the highest mode is limited to 1 minute, then the output is gradually reduced to about 500 lumens over 5 minutes. If the internal temperature of the flashlight rises above 60°C, it will automatically start to reduce the power further in gradual steps until the temperature stabilizes. As soon as the temperature of the lamp drops below 60°C, the power will increase again gradually. Operation in 400 lumens mode is limited to 5 minutes, after which the output will gradually decrease to 200 lumens over a period of 5 minutes.
Battery charge indication. If the indicator LED is green, the battery is more than 80% charged. Green flashing indicates 50-80% capacity. If the light is red, the battery is charged to 20-50%. Red flashing indicates less than 20% of capacity remaining. The indication only works correctly with RCR123A / 16340 rechargeable batteries.

Charging
Remove the rubber cap of the charging connector and plug the included cable into the flashlight (USB-C connector), plug the other end of the cable into a computer, power bank or USB mains or car adapter (not included). The side button lights up red during charging and turns green when fully charged. After charging the flashlight, reseal the charging connector with the rubber cap. Charging a fully discharged battery takes approximately 1.5 hours. In an emergency, the flashlight can also be used while charging, but only the 5 and 50 lumen white modes and red modes will be available.
Discharged Battery Warning: If the battery voltage drops below the set level, the headlamp will automatically switch to lower power modes. If the headlamp is already switched to the lowest power mode and the battery is critically low, the indicator in the button will flash red. However, the headlamp will continue to illuminate until the battery is completely depleted. Note: the low battery warning is calibrated to the voltage of rechargeable Li-ion batteries only.

Caution
Do not disassemble the sealed part in the flashlight head yourself, it will violate the warranty.
If using a disposable CR123A battery, do not attempt to charge it in the flashlight.
If the protective rubber rings appear damaged after extended use, replace them. The rings should also be lubricated to prevent erosion of the rubber. By following these rules, the flashlight will be properly protected against water.
If the flashlight blinks, does not switch to higher power modes, or does not light up, it may be due to one of the following reasons:
- The battery is almost dead - charge it or replace it.
- The contacts inside the flashlight are dirty - clean them with a cotton swab dipped in alcohol.
- The back of the flashlight is loose - tighten it.