The third generation of the very popular rechargeable headlamp Fenix HM51R Ruby V3.0 offers a luminous flux of up to 860 lumens (ANSI) of neutral white light (4500 K) with a range of up to 140 meters and is additionally equipped with red LEDs. It is powered by one rechargeable RCR123A type battery (included), which is charged directly in the lamp via a modern USB-C connector; alternatively, a disposable CR123A lithium battery can be used for power (with a limited max output of 150 lumens). There is also an indicator LED in the control button, so you will always know when to recharge the battery. The tail cap of the lamp is magnetic, so it can be easily attached to any iron surface. The HM51R has nine different lighting modes that allow selection between high output and long runtime (up to 125 hours). The lamp is powered by digitally controlled constant current to ensure steady light output even as the battery voltage falls (during gradual discharge).

The all-metal construction ensures high durability, optimal cooling and is fully waterproof according to the IP68 standard down to a depth of 2 meters underwater. The practicality of the headlamp is increased by the option to remove the light from the headband holder and use it as a small pocket flashlight. In addition, the headlamp is equipped with a removable steel clip, so you can easily attach it to a pocket or strap. The Fenix HM51R V3.0 headlamp is an ideal companion for various sports activities, nature trips as well as for household and work use.

The Fenix HM51R headlamp is a limited edition based on the Fenix HM50R headlamp and offers a number of improvements. For example, higher output of both white and red light, greater battery capacity, a warmer light tint, a magnetic tail cap, constant regulation in most modes, more red light modes and more.

All lamp parameters (luminous flux, runtime on batteries, waterproofing, beam distance and impact resistance) are measured in accordance with the ANSI/NEMA FL 1-2009 standard.

Specifications of the Fenix HM51R Ruby V3.0 headlamp

• A premium high-performance SST-20-WS second-generation LED with a neutral light tint (4500 K) and a lifespan of 50,000 hours is used, plus two Everlight red LEDs.
• Five white light modes: 860 lumens (1.25 hours) -> 450 lumens (2 hours) -> 160 lumens (3.1 hours) -> 50 lumens (10 hours) -> 3 lumens (125 hours)
• Four red light modes: 10 lumens (45 hours) -> 1 lumen (75 hours) -> red flashing 10 lumens (76 hours) -> SOS 5 lumens (116 hours)
• Measured with the included Fenix RCR123A Li-ion battery with a capacity of 950 mAh (included).
• In an emergency, a single disposable 3V CR123A lithium battery can be used for power, but the highest available mode will be 150 lumens.
• Digital constant output regulation with overheat protection.
• Charging via a USB-C connector on the side of the headlamp; charging time for a fully depleted battery is approx. 2 hours.
• Smooth beam with a range of up to 140 meters (4,890 cd)
• 66 mm length x 36 mm width x 32 mm height (including the headlamp mount).
• 84 grams (including strap and battery).
• Battery capacity indication and low voltage warning.
• The lamp has memory and always turns on in the last selected mode (applies to both white and red light).
• Magnetic tail cap, the headlamp can be attached to any iron surface.
• Protection against reverse battery insertion (reverse polarity).
• The cleverly designed mount also functions as a clip when the headlamp is removed from the strap.
• Comfortable perforated strap without reflective elements.
• Simple one-switch operation.
• Body made of high-strength aerospace aluminum alloy A6061-T6.
• Durable hard-to-scratch finish - Type III hard anodized.
• Dustproof and waterproof according to IP68 standard (tested underwater at a depth of 2 meters for 4 hours).
• Impact resistant to drops from a height of 2 meters.
• High-quality TIR optics with high light transmittance.
• The package includes the HM51R V3.0 headlamp, ARB-L16-950P battery, spare O-ring, USB-C charging cable, steel clip.
• Optional accessories include the Fenix APB-20 pouch and a set of black straps AFH-02 without reflective elements - suitable for example for hunting, military or police use.
• The headlamp can be mounted on handlebars with Lockblock and Bikeblock mounts after removing it from the holder.
• Further optional purchases include a spare strap, a USB wall adapter and a USB car adapter or a spare RCR123A battery with a USB-C connector.

Usage

From the factory there may be a black insulating cover on the battery inside the lamp. Before first use remove it from the battery.

• An off headlamp turns on into the last used white light mode by holding the button for 0.5 seconds.
• An off headlamp turns on into the last used red light mode by double-pressing the button quickly.
• A headlamp that is on turns off by holding the button for 0.5 seconds.

If the headlamp is on, short presses of the button can cyclically switch output modes in the order 3 - 50 - 160 - 450 - 860 lumens (when turned on into white light) or red 1 lumen - red 10 lumens - red flashing - red SOS (when turned on into red light). The lamp has memory and always turns on in the last selected mode (applies to both white and red light).

Overheat protection: During prolonged use of the headlamp at high output modes a large amount of heat accumulates. When the headlamp reaches a temperature of 60 °C or higher, it will automatically reduce output by several lumens to reduce the temperature. When the temperature drops below 60 °C, the output will gradually increase again.

Battery charge indicator: After a short press of the button (the headlamp must be off) the LED indicator in the button activates. If the indicator diode lights green the battery is charged to more than 85%. Green flashing means 50-85% capacity. If it lights red it is charged to 20-50%. Red flashing indicates less than 20% battery capacity remaining. The indication works correctly only with rechargeable RCR123A / 16340 batteries.

Charging: Flip open the rubber cover of the charging connector and plug the supplied cable into the lamp (USB-C connector); plug the other end of the cable into a computer, power bank or USB adapter for mains or car (not included). During charging the side button lights red and when fully charged it lights green. After charging the lamp, reseal the charging connector with the rubber cover. Charging a fully depleted battery takes approx. 2 hours. In an emergency the lamp can be used while charging, but only white modes 3 and 50 lumens and the red modes will be available.

Low battery warning: If the battery voltage drops below the set level, the headlamp will automatically switch to lower output modes. If the headlamp is already switched to the lowest output mode and the battery is critically discharged, the indicator in the button will start flashing red. However, the headlamp will continue to light until the battery is completely discharged. Note: the low battery warning is calibrated only to the voltage of rechargeable Li-ion batteries.

Locking the headlamp against accidental activation: Loosen the battery cap of the headlamp by a quarter turn to interrupt the electrical contact and the headlamp cannot be turned on. The button can also be locked electronically – with the headlamp off hold the button pressed for 3 seconds. When locked the lamp will flash red. To unlock, press and hold the button again for 3 seconds.

Warning

• Keep this headlamp out of reach of children.
• Do not shine the headlamp directly into anyone's eyes.
• Do not disassemble the sealed part in the head of the lamp yourself, this will void the warranty.
• Lock the headlamp or remove the battery to prevent accidental activation when the headlamp is stored in closed and flammable environments such as pockets and backpacks!
• Do not shine on flammable objects from immediate proximity to avoid damage or the creation of a hazard due to high temperature.
• If using a disposable CR123A battery do not attempt to charge it in the lamp.
• If the protective rubber rings appear damaged after long use, replace them. The rings should also be lubricated to prevent rubber erosion. By following these rules the lamp will be properly protected against water.
• If the lamp flashes, does not switch to higher output modes, or does not light, it may be for one of the following reasons:
  • The battery is almost discharged – charge or replace it.
  • The contacts inside the lamp are dirty – clean them with cotton wool dipped in alcohol.
  • The rear part of the lamp is loose – tighten it.

We offer a 30-day period for returning or exchanging goods if, for any reason, you are not satisfied with your order.

For more information, please see our Return Policy here.

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