Brinyte PT28 Oathkeeper 1600lm In-depth review, Pros and Cons

1600 lm output
15200 cd intensity
1 x 18650 Li-Ion battery

The Brinyte PT28 Oathkeeper (PT28OK) released in 2019. It uses Cree XHP35 HD LED, SMO reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 1600 lm output, 15200 cd intensity, and a beam distance of 247 m.

The PT28 Oathkeeper flashlight is an indispensable tool in various situations, from everyday tasks and outdoor adventures to emergency preparedness and professional use. This light has 4 modes of lighting. The mode memory of PT28 Oathkeeper contributes to a more seamless and intuitive user experience. It has a strobe function, which is one of the most effective self defense tools available. This USB rechargeable flashlight is designed to be compact and lightweight, making them highly portable and easy to carry.

Brinyte PT28 Oathkeeper (PT28OK) pictures

Brinyte PT28 Oathkeeper / PT28OK photo
Brinyte PT28 Oathkeeper / PT28OK photo
Brinyte PT28 Oathkeeper / PT28OK photo
Brinyte PT28 Oathkeeper / PT28OK photo
Brinyte PT28 Oathkeeper / PT28OK

The specifications below are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Brinyte PT28 Oathkeeper, then don’t hesite and signal the problem to us.

Brinyte PT28 Oathkeeper (PT28OK) specifications

NamePT28 Oathkeeper
Rated 3/5 based on 1299 user votes.

The presence of a flashlight can provide a sense of reassurance and confidence in unfamiliar or potentially dangerous environments.


Weight110 g
Length140.8 mm
Body diameter25.4 mm
Head diameter26.5 mm
Materialaluminium alloy with HAIII hard-anodized finish
desert tan

This 110 g flashlight would be considered slightly heavier than average for a handheld flashlight, but it is still within a reasonable weight range. This weight range is often found in smaller and more compact flashlights designed for everyday use or portability. The ideal length of a flashlight depends on personal preference, intended use, and the specific features and functionality you're looking for.

The aluminium bodies can be anodized, providing a protective layer and a wide range of color options for flashlight bodies. Anodizing enhances the corrosion resistance, hardness, and scratch resistance of the aluminum, while also allowing for a variety of attractive finishes. HAIII coating is widely used in the flashlight industry due to its durability, corrosion resistance, improved grip, and aesthetic appeal. This flashlight offers a wide array of color options, allowing you to choose from a diverse range of hues to suit your personal style and preferences.


EmitterCree XHP35 HD LED
Color temperature6500 K
LensAR coated glass
Switchelectronic side, mechanical rear

The emitter of PT28 Oathkeeper manufactured by Cree, a US-based LED manufacturing company. Cree is a well-regarded LED manufacturer known for its high-quality products and innovation in the lighting industry. Color temperature is a characteristic of light. It is measured in units called Kelvin (K) and is used to quantify the color appearance of light sources, particularly white light. The smooth reflector is typically used in flashlights where long-range illumination is a priority, such as searchlights or thrower flashlights. By minimizing light scattering and maximizing light directionality, the smooth reflector can produce a tighter and more concentrated beam that reaches greater distances.

The AR coating on the lens maximizes light transmission, making the flashlight more effective in darker environments. The PT28 Oathkeeper uses multiple switches. Depending on the placement and design of the switches, a multiple switch configuration can allow for one-handed operation. This is particularly helpful in situations where you need to hold or manipulate objects with one hand while using the flashlight with the other hand.

The PT28 Oathkeeper utilizes electronic switch. Electronic switches on flashlights provide a range of advantages and additional features compared to mechanical switches. The PT28 Oathkeeper has mechanical switch. Mechanical switches often offer tactile feedback, allowing users to feel a distinct click or resistance when the switch is pressed. This feedback helps users confirm that the switch has been activated or deactivated, providing a reassuring sense of control and awareness. The rear switch of PT28 Oathkeeper is designed to be rugged and durable, capable of withstanding harsh conditions and repeated use.


Flux1600 lm
Intensity15200 cd
Throw247 m
CD/LM factor9.5

The 1600 lm output of PT28 Oathkeeper provides greater versatility, as you can adjust the brightness levels to suit different lighting needs. The PT28 Oathkeeper flashlight with 15200 cd has an extended throw distance, allowing you to illuminate objects or areas at greater distances. This can be advantageous for outdoor activities, search and rescue operations, or scenarios where long-range visibility is required.

The throw distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. The stated throw distance typically indicates the point at which the brightness falls below a specified threshold, such as 0.25 lux. Flashlights with a higher cd/lm ratio typically excel in long-range throw and focused beam applications, while flashlights with a lower cd/lm ratio may provide a wider and more evenly distributed beam for closer-range illumination or general-purpose use.


Modes4 modes
Mode memoryyes
Ramping modeno

Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. The PT28 Oathkeeper has mode memory. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again. The PT28 Oathkeeper is tactical strobe ready. The strobe light is disorienting to the person it is aimed at which makes it difficult for them to concentrate. It has the SOS beacon function for an emergency situation. The SOS flashes Morse code so you can signal for help when needed. The SOS signal is recognized as an international distress call and is used to indicate an urgent need for assistance.


Battery1 x 18650 Li-Ion battery
Battery indicatoryes
Charger portmagnetic USB
Thermal regulationyes

The Brinyte PT28 Oathkeeper flashlight is powered by 1 x 18650 Li-Ion battery. The battery indicator lets you know when the battery is low, charging, or fully charged. USB rechargeable flashlights have become increasingly popular in recent years due to their convenience and sustainability. This flashlight has a built-in low voltage protection (LVP) to prevent damage to the cell from over-discharge, so protected cells are not necessary.

The PT28 Oathkeeper has thermal protection feature. The thermal protection mechanisms are designed to monitor and regulate the temperature of the flashlight during operation. This feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety. The "6" in the IP68 rating represents the level of protection against solid objects, specifically dust and foreign particles. It indicates that the PT28 Oathkeeper flashlight, is fully protected against the entry of dust and other solid objects. The PT28 Oathkeeper flashlight with IP68 rating can withstand being submerged in water beyond 1 meter for a prolonged period, typically specified by the manufacturer.


Package contents18650 battery
magnetic USB charger cable
nylon holster
tactical ring

Obtaining a flashlight with an included battery saves you the time and effort of searching for a compatible battery or waiting for a separate battery to arrive. The flashlight package is thoughtfully equipped with a holster, offering you a practical and secure storage solution for your flashlight. When the flashlight is clipped to a suitable location, it can be angled or positioned to provide hands-free illumination. The lanyard of PT28 Oathkeeper helps protect the flashlight from accidental damage by preventing it from falling or hitting the ground.

The performance of the Brinyte PT28 Oathkeeper flashlight is measured according to the ANSI / NEMA FL1 Standard 30 seconds after switching the light on. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Brinyte PT28 Oathkeeper (PT28OK) comparisons

According to our statistics, the Brinyte PT28 Oathkeeper flashlight was most often compared on our site with the following flashlights.

Brinyte T28 Artemis (T28) Brinyte T28 Artemis Brinyte WT01 Apollo (WT01) Brinyte WT01 Apollo Brinyte SR8 Rescue Angel (SR8RA) Brinyte SR8 Rescue Angel Brinyte PT28 Oathkeeper (PT28OK) Brinyte PT28 Oathkeeper Brinyte T18 Artemis (T18) Brinyte T18 Artemis Brinyte PT18 Pro Oathkeeper (PT18PRO) Brinyte PT18 Pro Oathkeeper

If there’s information about the Brinyte PT28 Oathkeeper that you would like to see on this site, then write to us.

FlashlightChart.com / Flashlights / Brinyte / Brinyte PT28 Oathkeeper (2019)