Waterproof LED Headlamp – Princeton Tec Eos Tactical


This is the bright and versatile Eos Tactical LED headlamp, manufactured by Princeton Tec in the USA. A waterproof LED headlamp, Eos Tac is rated for three foot submersion for 30 minutes. Its single regulated Maxbright LED provides a powerful spot beam. The headlamp comes with red, green, and blue filters to suit your personal preference for nocturnal operations. Proprietary heatsink technology and circuit voltage regulation allow the LEDs to burn brighter and longer. The Eos Tac is compatible with AAA–size alkaline, lithium, and rechargeable NiCad and NiMH batteries. It comes with three AAA alkaline batteries.

SKU: 795626012376 Categories: , Tags: ,


Princeton Tec Eos Tactical LED headlamp review; video credit: InnerBark.
  • The Maxbright LED provides a tightly focused spotlight for distance illumination (up to 60m / high power).
  • This headlamp is rated IPX7 by IED standard (one meter submersion for 30 minutes).
  • 3 AAA size alkaline batteries included, although lithium, or rechargeable NiCad or NiMH batteries may be used.
  • Maxbright LED emits white light but headlamp comes with these easy–to–change snap–in colored lenses for night use:
    • blue
    • green
    • red
  • Flip–down bracket on adjustable elastic headband

Eos Tactical Waterproof LED Headlamp Specifications

Output45 lumens
Lamp(s)1 Maxbright LED
Overall burn time
discontinuous use
(alkaline batteries)
1 Maxbright LED @ low power121 hours1, 2, 3
1 Maxbright LED @ medium power115 hours
1 Maxbright LED @ high power113 hours
1 Maxbright LED @ flashing116 hours
Constant use burn time
(alkaline batteries)
1 Maxbright LED @ low power50 hours
1 Maxbright LED @ medium power10 hours
1 Maxbright LED @ high power1 hours
1 Maxbright LED @ flashing12 hours
Batteries3 AAA alkaline (LR03, included), lithium (L92), or rechargeable NiCad, NiMH
Battery status LEDnone
Waterproof ratingIPX71 meter submersion for 30 minutes
Weight3.6 oz (103 grams)
UL ratingunrated
UL classificationunrated
UL temp codeunrated
1 Burn time is the duration of time the headlamp emits 0.25 lux at 2 meters. 0.25 lux is equivalent to the light of the full moon on a clear night.
2 Burn times shown here assume fresh batteries and use at one power setting for duration of test.
3 Alkaline batteries provide higher light output than NiCad or NiMH rechargeable batteries due to their higher voltage.
4 Please read user manual (see below).

Operating the Eos Tactical LED Headlamp

These instructions are intended not to replace, but to complement, information shown in the official Eos Tactical LED headlamp user manual from manufacturer Princeton Tec.

LED headlamp with snap-in color filters for night use, showing location of power switch 'A'

Eos Tac switch

The photo at left shows the waterproof power switch (marked A at left) on the top of this LED headlamp. With the unit on your head, the switches are located on the headlamp’s topside. This is convenient for index finger action with opposing thumb on the headlamp’s bottom.

  • Switch A controls the single Maxbright LED
    • Short click turns headlamp on
    • Longer click turns headlamp off
    • Successive clicks enable operating modes described below

Operating Modes

Green rings in the illustration depict the illumination state, not actual color. The LED puts out bright white light.

Spot light mode
  • Depress A once - 1 Maxbright LED on low
  • Depress A twice - 1 Maxbright LED on medium
  • Depress A three times - 1 Maxbright LED on high
  • Depress A four times - 1 Maxbright LED on flash

To turn off the headlamp, press and hold the switch (A) for about two seconds.

Documents and Manuals

  • Download the Eos Tactical headlamp User Manual (in English, Français, and Deutsch)
Waterproof LED Headlamp – Princeton Tec Eos Tactical was last modified: May 23rd, 2024 by


There are no reviews yet.

Be the first to review “Waterproof LED Headlamp – Princeton Tec Eos Tactical”

Your email address will not be published. Required fields are marked *