A discounted value bundle of the Fenix HM51R Ruby V3.0 headlamp and the Ruike P801-J folding pocket knife.

The third generation of the highly 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 beam distance of up to 143 meters, and is additionally equipped with red LEDs. It is powered by a single rechargeable battery type RCR123A with the highest available capacity of 1150 mAh (included in the package), which is charged directly in the headlamp via a modern USB-C connector. Alternatively, a disposable lithium CR123A battery can be used for power (with max. output limited to 160 lumens). Furthermore, there is an indicator LED in the control button, so you will always know when to recharge the battery. The tail cap of the flashlight is magnetic, making it easy to attach to anything made of iron. The HM51R features nine different lighting modes, allowing you to choose between high performance and long runtime (up to 148 hours). The flashlight is powered by digitally controlled constant current to guarantee consistent light output even as the battery voltage drops (during gradual discharge).

The all-metal construction ensures high durability and optimal cooling, while being fully waterproof to the IP68 standard down 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. Additionally, the headlamp is equipped with a removable steel clip, allowing you to easily attach it to a pocket or strap. The Fenix HM51R V3.0 headlamp is the ideal companion for various sports activities, trips to nature, as well as for home use and work.

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

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

Parameters of the Fenix HM51R Ruby V3.0 headlamp

• Utilizes a premium second-generation powerful SST-20-WS LED with a neutral light tint (4500 K) and a lifespan of 50,000 hours, plus two red Everlight LEDs.
• Five white light modes: 860 lumens (1 h 25 min) - 450 lumens (2 h 30 min) - 160 lumens (3 h 50 min) - 50 lumens (11 h 50 min) - 3 lumens (148 hours).
• Four red light modes: 10 lumens (12 h 50 min) - 1 lumen (89 hours) - red flashing 10 lumens - SOS 5 lumens.
• Measured with the included Li-ion battery Fenix RCR123A with a capacity of 1150 mAh (included in the package).
• In an emergency, a single disposable 3V lithium CR123A battery can be used, but the highest available mode will be 160 lumens.
• Digital constant regulation of output with overheat protection.
• Charging via the USB-C connector on the side of the headlamp; charging time for a fully depleted battery is approx. 2.5 hours.
• Smooth light beam with a distance of up to 143 meters (5,173 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 headlamp has a memory function and will always turn on in the last selected mode (applies to both white and red light).
• Magnetic tail cap, the headlamp can be attached to anything made of iron.
• Reverse polarity protection to protect from improper battery insertion.
• The cleverly designed mount also functions as a clip when you remove the headlamp from the strap.
• Comfortable perforated strap with reflective elements.
• Simple operation with a single switch.
• Body made of high-strength A6061-T6 aerospace aluminum alloy.
• Durable, hard-to-scratch surface - Type III hard anodized.
• Dustproof and waterproof according to the 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 transmission.
• The package includes the HM51R V3.0 headlamp, ARB-L16-1150P battery, spare O-ring, USB-C charging cable, and a steel clip.
• You can additionally purchase the Fenix APB-20 case and a set of black straps AFH-02 without reflective elements - suitable for hunting, military, or police use.
• After removing it from the mount, the headlamp can be attached to handlebars using the Lockblock and Bikeblock mounts.
• It is also possible to purchase a spare strap, USB wall adapter, and a USB car adapter, or a spare RCR123A battery with a USB-C connector.

Usage

There may be a black insulating cap inside the headlamp on the battery from the factory. Remove it from the battery before first use.

• The turned-off headlamp is turned on into the last used white light mode by holding the button for 0.5 seconds.
• The turned-off headlamp is turned on into the last used red light mode by double-clicking the button quickly.
• The turned-on headlamp is turned off by holding the button for 0.5 seconds.

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

Overheat protection: When the headlamp is used on high output modes for extended periods, a large amount of heat accumulates. When the headlamp reaches a temperature of 60 °C or higher, it automatically steps down the output by a few lumens to reduce the temperature. When the temperature drops below 60 °C, the output will gradually increase again.

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

Charging: Flip open the rubber cover 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 wall/car adapter (not included). During charging, the side button glows red and turns green when fully charged. After charging the flashlight, seal the charging connector again with the rubber cover. Charging a fully depleted battery takes approx. 2.5 hours. In an emergency, the flashlight can also be used while charging, but only the 3 and 50 lumen white modes and the red modes will be available.

Low battery warning: If the battery voltage drops below the preset level, the headlamp will automatically step down to lower output modes. If the headlamp is already in the lowest output 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 depleted. Note: the low battery warning is calibrated only for the voltage of rechargeable Li-ion batteries.

Locking the headlamp against accidental activation: Loosen the battery tail cap of the headlamp by a quarter turn, which breaks the electrical contact and prevents the headlamp from turning on. The button can also be locked electronically – with the headlamp turned off, press and hold the button for 3 seconds. After locking, the flashlight will flash red. To unlock, hold the button again for 3 seconds.

Warnings

• Keep this headlamp out of the reach of children.
• Do not shine the headlamp directly into anyone's eyes.
• Do not disassemble the sealed part in the head of the flashlight yourself, as this will void the warranty.
• Lock the headlamp or remove the battery to prevent accidental activation if the headlamp is placed in an enclosed and flammable environment, such as pockets and backpacks!
• Do not shine on flammable objects at close range to avoid damaging them or creating a hazard due to high temperatures.
• In the case of using a disposable CR123A battery, do not attempt to charge it in the flashlight.
• If the protective rubber rings appear damaged after long-term use, replace them. The rings must also be lubricated to prevent rubber erosion. By following these rules, the flashlight will be properly protected against water.
• If the flashlight flashes, does not switch to higher output modes, or does not light up, it may be due to one of the following reasons:
  • The battery is almost empty – charge or replace it.
  • The contacts inside the flashlight are dirty – clean them with a cotton swab dipped in alcohol.
  • The tail of the flashlight is loose – tighten it.