Fenix E04R Reference ManualUpdated an hour ago

The Fenix E04R is a rotating clip-on light with a dual-color warning side light. This summary is drawn from the manufacturer’s official user manual — see the downloadable PDF reference manual on the product page for complete details.

Product Features

• 300 lumens maximum output and 46 meters maximum beam distance
• One Luminus SST-12 white LED and one red LED, 50,000-hour lifespan each
• Built-in 400mAh rechargeable battery, up to 87 hours runtime in Moonlight
• Multi-light design: red-and-white main light plus a side warning light (Red & Blue flash, Red flash, Blue flash)
• 360° rotatable clip with 40° beam angle for hands-free wear (pockets, caps, backpacks)
• Dual-switch operation, battery level indication, low-voltage warning, lockout function
• IP66-rated, USB Type-C charging with inner waterproofing
• Size: 2.30" x 1.18" x 1.17" / 58.5 x 30 x 29.8 mm
• Weight: 1.45 oz / 41 g (including battery)

Technical Parameters

Specifications reflect Fenix's lab testing with the built-in 400mAh battery at 21±3°C / 50-80% humidity. Actual performance varies by environment.

• White – High: Output 300 lumens, Runtime 1 hour 40 minutes*, Distance 46 meters, Intensity 683 candela
• White – Med: Output 100 lumens, Runtime 2 hours 40 minutes, Distance 28 meters, Intensity 200 candela
• White – Low: Output 25 lumens, Runtime 11 hours 40 minutes, Distance 13 meters, Intensity 45 candela
• White – Moonlight: Output 1 lumen, Runtime 87 hours, Distance 3 meters, Intensity 2 candela
• Red – High: Output 12 lumens, Runtime 6 hours 40 minutes, Distance 13 meters, Intensity —
• Red – Low: Output 5 lumens, Runtime 19 hours 30 minutes, Distance 8 meters, Intensity —
• Side – Red & Blue Flash: Output 1 lumen, Runtime 23 hours**, Distance —, Intensity —
• Side – Red Flash / Blue Flash / RGB Pulse / RGB Chase: Output 1 lumen, Runtime —, Distance —, Intensity —

Impact Resistance: 1 meter   Waterproof: IP66

Operating Instructions

On/Off: Press and hold the main light switch for 0.5 seconds to turn the White light mode on/off. Double-click to turn on Red light mode; press and hold 0.5 seconds to turn off. Press and hold the side light switch for 0.5 seconds to turn Side light mode on/off.

Mode Switching: Double-click the main light switch to move between White and Red light modes. Press and hold the side light switch for 0.5 seconds to enter Side light mode from either.

Output Selection: White light: single click to cycle Moonlight → Low → Med → High. Red light: single click to cycle Low → High. Side light: single click to cycle Red & Blue flash → Red flash → Blue flash → RGB pulse → RGB chase.

Lock/Unlock: With the light off, press and hold both switches simultaneously for 3 seconds to lock (blinks twice on Moonlight) or unlock (activates on Moonlight).

Intelligent Memory Circuit: The light memorizes and recalls the last-used White/Side light output.

Charging

• Turn off the light, then connect the USB Type-C charging cable to the side charging port.
• Indicator glows red while charging and turns green when fully charged.
• Unplug the cable once charging completes.
• Charging voltage: 5V; maximum charging power 1.85W (5V/370mA); does not support fast charging.
• Normal charging time is about 2 hours from depleted to full with a 5V/1A adapter. All modes/outputs work while charging except White High.

Battery Level Indication

• Green light on: 100%-85% (saturated)
• Green light flashing: 85%-50% (sufficient)
• Red light on: 50%-25% (poor)
• Red light flashing: 25%-1% (critical)

Intelligent Overheat Protection

The light steps down output automatically once it reaches 60°C/140°F or above; it gradually recalls the preset level once cooled, though high output levels must be manually reselected.

Low-Voltage Warning

The light downshifts brightness automatically until Moonlight is reached; in Moonlight the indicator blinks red continuously to prompt a recharge (the light will not shut off automatically).

Usage and Maintenance

• Disassembling the sealed head can damage the light and voids the warranty.
• Lock the light to prevent accidental activation during storage or transport.
• Poor battery level or an engaged lock can cause flickering or failure to illuminate — recharge or unlock as needed. Contact your authorized distributor if issues persist.

What's Included

Fenix E04R flashlight, USB Type-C charging cable, lanyard, user manual, warranty card

Warnings

• Keep out of reach of children.
• Do not shine the light directly into anyone's eyes.
• Do not place the light head near flammable objects.
• Do not hold the light in your mouth or use it in other unintended ways.
• The light shell can become hot during extended use — handle with care to avoid burns.
• Lock the light before placing it in pockets or backpacks to prevent accidental activation.
• The LEDs are not replaceable; the whole light must be replaced at end of LED life.