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The second generation of the very popular Fenix HM51R Ruby V2.0 rechargeable headlamp offers a light output of up to 700 lumens (ANSI) of neutral white light (4500 K) with a beam distance of up to 120 meters and is also equipped with 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 can be used for power (with a limited maximum output of 150 lumens).lt;/p>

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

The flashlight is powered by a digitally controlled constant current to ensure consistent light output even when the battery voltage decreases (as they gradually discharge). The all-metal construction ensures high durability, optimal cooling, and is fully waterproof 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 mount 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 V2.0 headlamp is the ideal companion for a variety of sports activities, trips to the countryside, as well as for use at home and at work. The Fenix HM51R headlamp is a limited edition based on the Fenix HM50R headlamp and offers a number of improvements. For example, a warmer light tone, a magnetic end cap, constant regulation in most modes, more red light modes, and more. If you are interested in all the differences between these two models, read the article Comparison of Fenix HM50R V2.0 and Fenix HM51R Ruby V2.0 headlamps.All flashlight parameters (luminous flux, battery life, water resistance, afterglow, and impact resistance) are measured in accordance with ANSI/NEMA FL 1-2009.A replacement battery can be purchased for the headlamp. or a replacement battery with USB output.Premium powerful Cree XP-G3 LED with neutral light tone (4500 K)

50,000 hours lifetime

Two red Everlight LEDs

Five white light modes

Four red light modes

Measured with a Fenix RCR123A Li-ion battery with a capacity of 700 mAh

Powered by one Fenix RCR123A 700 mAh Li-ion battery, included in the package

In an emergency, one disposable 3V CR123A lithium battery can also be used for power. Digital constant power regulation. Charging via USB-C connector on the side of the headlamp.Charging time for a completely discharged battery is approximately 1.5 hours. Smooth light cone with a range of up to 120 meters. (3690 cd)

Battery capacity indicator and low voltage warning

The flashlight has a memory and always turns on in the last mode set

Magnetic end cap, the headlamp can be attached to anything made of iron. Reverse battery insertion protection (polarity reversal).The cleverly designed holder also functions as a clip when you remove the headlamp from the strap. Comfortable perforated strap with reflective elements. Simple control with a single switch.Body made of high-strength A6061-T6 aircraft aluminum alloy. Durable, scratch-resistant surface - Type III hard anodized.Dustproof and waterproof to IP68 standard. Impact resistant to drops from a height of 2 meters.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 flashing 5 lumens (72 hours) -> SOS 5 lumens (72 hours)

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

Use
The battery compartment may contain a black insulating cap from the factory. Remove it from the battery before first use.
- To turn on the headlamp, hold the button down for 0.5 seconds to activate the last used white light mode.
- When turned off, the headlamp will turn on in the last used red light mode by pressing the button twice quickly.
- When turned on, the headlamp will turn off by holding the button for 0.5 seconds.
When the headlamp is on, short presses of the button will cycle through the power modes in the order 3 - 50 - 150 - 400 - 700 lumens (when switched on to white light) or red 1 lumen - red 5 lumens - red flashing - red SOS (when switched on in red light). The flashlight has a memory and always turns on in the last set mode (applies to both white and red light).
Overheating protection: Operation in the highest mode is limited to 1 minute, after which the power is gradually reduced to approx. 500 lumens within 5 minutes. If the internal temperature of the flashlight rises above 60°C, it will automatically continue to reduce the power in gradual steps until the temperature stabilizes. Once the temperature of the flashlight drops below 60°C, the power will gradually increase again. Operation in 400 lumen mode is limited to 5 minutes, after which the output gradually decreases to 200 lumens over 5 minutes.
Battery charge status indication: Pressing the button briefly (the headlamp must be turned off) activates the LED indicator in the button. If the indicator LED lights up green, the battery is more than 80% charged. Green flashing indicates 50-80% capacity. If it lights up red, it is 20-50% charged. Red flashing indicates that less than 20% of the battery capacity remains. The indicator only works correctly with RCR123A / 16340 rechargeable batteries.

Charging
Remove the rubber cover from the charging connector and connect the included cable to the flashlight (USB-C connector). Connect the other end of the cable to a computer, power bank, or USB adapter for use with a power outlet or car (not included). During charging, the side button lights up red, and when fully charged, it lights up green. 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 headlamp can also be used while charging, but only the white 5 and 50 lumen modes and red modes will be available.
Low 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 start flashing red. However, the headlamp will continue to shine until the battery is completely discharged. Note: The low battery warning is calibrated only for the voltage of rechargeable Li-ion batteries.Do not disassemble the sealed part in the head of the flashlight yourself, as this will void the warranty.
If using a disposable CR123A battery, do not attempt to recharge it in the flashlight.
If the protective rubber rings appear damaged after prolonged use, replace them. The rings should also be lubricated to prevent rubber erosion. Following these rules will ensure that the flashlight is properly protected against water.
If the flashlight flashes, does not switch to higher power modes, or does not turn on, it may be due to one of the following reasons:
- The battery is almost dead – recharge 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.