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The third generation of the popular Fenix HM51R Ruby V3.0 headlamp offers even higher performance, longer battery life, and maximum versatility in a compact design. It offers a luminous flux of up to 860 lumens with neutral white light (4500 K), a beam distance of 140 meters, and a red LED that is suitable for discreet lighting, night work, or emergency situations.

Thanks to its all-metal construction, IP68 waterproof rating, and magnetic end cap, the headlamp is ideal not only for sports and outdoor activities, but also for work and home use. The light can be easily removed from the strap and used as a flashlight, or attached to a metal surface using the magnet.

Package contents: HM51R V3.0 headlamp, ARB-L16-950P battery, spare O-ring, USB-C charging cable, steel clip.

1. Maximum light control in every situation
   The combination of powerful white light, red LEDs, and nine modes allows you to precisely customize your lighting for sports, work, and emergency situations without compromise.
2. Durable construction that won't let you down
   The all-metal body with IP68 protection, magnetic end cap, and ability to be used as a pocket flashlight make this headlamp an extremely reliable tool for the field, workshop, and home.

• Light output up to 860 lumens
• Neutral white and red light
• Light range up to 140 meters
• Magnetic end piece
• USB-C charging
• Up to 125 hours of battery life
• All-metal construction
• Waterproof to IP68
• Removable from head mount
• Low weight of 84 g

Specifications:

Light source: SST-20 (white), red Everlight LEDs
Luminous flux: 860 lm
Beam distance: 140 m
Modes: 9 (5 white, 4 red)
Light color: neutral white (4500 K), red
Power supply: 1× RCR123A (950 mAh) / 1× CR123A
Charging: USB-C
Max. runtime: 125 hours
Waterproof: IP68 (2 m)
Dimensions: 66 × 36 × 32 mm
Weight: 84 g (including battery and strap)
Material: A6061-T6 aircraft-grade aluminum

Use
A black insulating cap may be inside the flashlight on the battery. Remove it from the battery before first use.
- When the headlamp is turned off, it will turn on to the last used white light mode by holding the button for 0.5 seconds.
- When the headlamp is off, double-press the button quickly to turn it on in the last used red light mode.
- When the headlamp is on, hold the button down for 0.5 seconds to turn it off.
When the headlamp is turned on, short presses of the button will cycle through the power modes in the order 3 - 50 - 160 - 450 - 860 lumens (when turned on to white light) or red 1 lumen - red 10 lumens - red flashing - red SOS (when switched on to 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: During prolonged use of the headlamp at high power modes, a large amount of heat accumulates. When the headlamp reaches a temperature of 60 °C or higher, it automatically reduces the power by a few lumens to lower the temperature. When the temperature drops below 60°C, the output will gradually increase again.
Battery charge status indicator: Pressing the button briefly (the headlamp must be turned off) activates the LED indicator in the button. If the indicator LED is green, the battery is more than 85% charged. A green flashing light indicates 50-85% capacity. If it lights up red, it is charged to 20-50%. A red flashing light indicates that less than 20% of the battery capacity remains. The indicator only works correctly with rechargeable RCR123A / 16340 batteries.
Charging: Remove the rubber cap 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 2 hours. In an emergency, the headlamp can also be used while charging, but only the 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 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.
Locking the headlamp to prevent accidental switching on: Loosen the headlamp battery cap by a quarter turn to break the electrical contact and prevent the headlamp from being switched on. The button can also be locked electronically – with the headlamp turned off, hold the button down for 3 seconds. After locking, the light will flash red. To unlock, hold the button down again for 3 seconds.

Warning
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 lamp yourself, as this will void the warranty.
Lock the headlamp or remove the battery to prevent accidental activation if the headlamp is placed in a closed and flammable environment, such as pockets and backpacks!
Do not shine the light on flammable objects from close range to avoid damage or danger due to high temperatures.
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. By following these rules, the flashlight will be 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.