Excellent cap light.
"Very small, very light, extremely bright tiny light that can be carried in a pocket and not even realize it’s there till you need it. Holds a charge for a long time, and just a very handy little light to have on hand."
The Fenix E04R is a compact clip-on light built for hands-free use in the field, on the job, or anywhere a secure, versatile mount matters. Its 360-degree rotating 16mm clip and 40-degree tilt angle let you position the beam exactly where you need it, whether clipped to a shirt pocket, gear strap, or hat brim. White output reaches up to 300 lumens with a beam distance of 151 feet (46 meters), backed by up to 23 hours of runtime for all-day and overnight reliability. The side-mounted warning light adds serious utility with red/blue flashing, red flashing, blue flashing, RGB pulse, and RGB chase modes, making the E04R a capable signal and safety light as well as a task light. Recharging is handled through a waterproof USB-C port, and electronic lockout prevents accidental activation in a pack or pocket.
Built to IP66 waterproofing standards and rated for 1.5-meter impact resistance, the E04R holds up to rain, dust, and the routine punishment of daily carry. Whether you're a first responder who needs a visible warning presence, a tradesperson working in tight spaces, or an outdoor user who wants a lightweight backup light, the E04R delivers a practical combination of output, runtime, and adaptability in a clip-on form factor that stays out of the way until you need it.
Q: What kind of LEDs are used in E04R?
A: Utilizes one Luminus SST-12 white light LED and one red light LED.
Q: What is the color temperature of E04R?
A: 6500k.
Q: What is the working voltage of E04R?
A: The working voltage is 3.0 V - 4.2 V. The limiting working voltage range is 2.8 V-4.35 V.
Q: Is E04R rechargeable? How long is the charging time?
A: Yes. The E04R is rechargeable via the USB Type-C charging port. The normal charging time is about 2 hours from depleted to fully charged with a 5V/1A or above charging adapter.
Q: How to prevent accidental activation of the E04R?
A: Press and hold the two switches simultaneously for 3 seconds to lock or unlock the flashlight.
Q: Why does the E04R downshift to a lower mode after being used for a while and the higher mode cannot be selected?
A: There are two reasons:
1. Intelligent Overheat Protection
The light will accumulate a lot of heat when used at high output levels for extended periods. When the light reaches a temperature of 60°C/140°F or above, it will automatically step down a few lumens to reduce the temperature.
2. Low-voltage Warning
When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until the lowest output is reached.
Q: Why does the E04R sometimes flicker?
A: The reasons that may cause the light to flicker, shine intermittently or even fail to illuminate:
1. Poor battery level.
Solution: Recharge the battery.
Solution: Press and hold the main light switch and the side light switch simultaneously for 3 seconds to unlock the flashlight.
If the above methods don't work, please contact your authorized distributor.
Overall rating: 5.0 / 5 from 4 reviews.
Review topics: [].
"Very small, very light, extremely bright tiny light that can be carried in a pocket and not even realize it’s there till you need it. Holds a charge for a long time, and just a very handy little light to have on hand."
— John J. (5/5)
"Great for my back up lighting on my front strap of my backpack!"
— VINCENT (5/5)
"Amazing light!"
— Jason N. (5/5)
"I attach this little light to the back of my motorcycle vest for more visibility when i night ride. Great different color strobe lights to choose from"
— Sean W. (5/5)
The Fenix E04R is a compact clip-on light built for hands-free use in the field, on the job, or anywhere a secure, versatile mount matters. Its 360-degree rotating 16mm clip and 40-degree tilt angle let you position the beam exactly where you need it, whether clipped to a shirt pocket, gear strap, or hat brim. White output reaches up to 300 lumens with a beam distance of 151 feet (46 meters), backed by up to 23 hours of runtime for all-day and overnight reliability. The side-mounted warning light adds serious utility with red/blue flashing, red flashing, blue flashing, RGB pulse, and RGB chase modes, making the E04R a capable signal and safety light as well as a task light. Recharging is handled through a waterproof USB-C port, and electronic lockout prevents accidental activation in a pack or pocket.
Built to IP66 waterproofing standards and rated for 1.5-meter impact resistance, the E04R holds up to rain, dust, and the routine punishment of daily carry. Whether you're a first responder who needs a visible warning presence, a tradesperson working in tight spaces, or an outdoor user who wants a lightweight backup light, the E04R delivers a practical combination of output, runtime, and adaptability in a clip-on form factor that stays out of the way until you need it.
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