Nitecore NU33 Review: A Compact 700-Lumen Headlamp for Everyday Adventure

Introduction

The Nitecore NU33 is the successor to the NU32, and Nitecore has improved on that formula in most respects. It keeps the compact, lightweight shape that makes a headlamp easy to live with, then adds more output, a cleaner charging setup, and a better thought-out control layout. With a 700-lumen maximum, a 147-yard throw, and a price of around $50, it lands in a practical spot for camping, hiking, running, and everyday work in the dark.

It also represents a clear step up from Nitecore’s UT27, a headlamp that fell well short of expectations. On the NU33, the fundamentals are where they should be: a genuinely useful spread of modes, dependable runtimes, and a body that stays comfortable over long outings.

Who This Headlamp Is For

The NU33 suits anyone who wants a single headlamp to cover a wide range of situations rather than a specialist light for one narrow job. The throw mode handles distance work, the flood mode is aimed at closer tasks, and the red auxiliary light is there for situations where you want to keep your night vision intact.

At 3.3 ounces it is light enough to forget you are wearing it, and the IP66 rating covers dust and light rain, so a sudden shower or a dusty trail is not a problem. It is worth being clear about what that rating does not cover: the NU33 cannot be submerged, so it is not a light for swimming or for river crossings where it might end up underwater.

The mode layout is one of the reasons this headlamp works for such a broad audience. Three separate LEDs sit behind the front lens, so you are not forcing one beam profile to do everything. Switching between them is quick, which matters more than raw output once you are actually using the light on a trail.

Lighting Modes and Output

The NU33 uses three LEDs: a primary throw emitter, a flood emitter, and a red auxiliary emitter. In the throw mode you get a medium setting at 60 lumens, a high setting at 200 lumens, and a Turbo setting at 700 lumens. Turbo is genuinely bright and puts out a serious amount of light. There are also SOS and beacon modes for emergencies and signalling.

The flood mode steps down further, with a low setting at 50 lumens and an ultra low setting at 6 lumens, and it spreads across a 100-degree beam. The red auxiliary mode runs at 13 lumens and also offers a red flash.

Output behaviour is one of the stronger points here. On Turbo and High, the beam holds steady for roughly the first hour of the run before it begins to step down, so you get the full brightness when it matters most at the start of a night hike. The throw beam itself is excellent, producing a good amount of white light that works well around camp, on the trail, and while running.

The flood modes are a different proposition. Their colour temperature is warmer, which is pleasant for close work, but the flood beam is not strong enough for hiking and certainly not bright enough for running. Treat flood as the mode for cooking, reading, sorting gear, or moving around a tent, and use throw when you need to see where you are going.

Battery, Charging, and Runtime

The NU33 runs on an integrated 2,000 mAh battery. It cannot be removed, which is the single biggest design decision on this headlamp and one that will matter differently depending on how you use it.

Charging is handled over USB-C, and a full charge takes about an hour and a half, which is quick for a headlamp in this class. The charging port cover is one of the clearest improvements over the NU32. On the earlier model the cover never really stayed in place over the port, and here it seals properly and stays put.

Runtimes are solid across the board. In the throw mode you get roughly 4 hours on Turbo, 9 hours on High, and 38 hours on Medium. In the flood mode the low setting runs for about 47 hours, while the ultra low setting stretches to around 147 hours. The spacing between levels is sensible, so you can pick a setting that matches the length of your outing rather than jumping straight from very bright to barely there.

A power level indicator sits on the side of the housing, made up of four illuminated dots, each representing 25 percent of the remaining charge. That is a much more useful arrangement than a single blinking LED. There is also a lockout mode: press both buttons at the same time to enter it, then press and hold to unlock, which prevents the light from switching on inside a pack.

Comfort, Controls, and Build Quality

The NU33 uses a plastic outer shell with an aluminium frame, and the result is a headlamp that feels solid despite its low weight. It measures smaller than the NU32 and comes in at 3.3 ounces, and it stays comfortable even over long periods of wear.

Controls are straightforward. You have an on and off switch plus a mode selector, and moving between the throw, flood, and red modes and cycling through their levels is intuitive enough to learn in a few minutes. The buttons are also easy to use with medium thickness gloves on, which is not a given on compact headlamps.

The headband itself is fully reflective, so if you are out running at night you will be far easier to spot. That is a small detail that makes a real difference on roads and shared paths.

The light tilts downward on its mount, which covers the angles you need for trail walking and close work. It does not tilt upward, so if you want a beam aimed above head height you will need to adjust the band instead. The mount itself holds the headlamp firmly once set, and the housing does not shift around during normal use.

Things to Consider Before Buying

The integrated battery is the first thing to weigh up. If you are used to carrying spare cells and swapping them mid-trip, the NU33 will not work that way, and for some people that alone is a deal breaker. The counterargument is that the runtimes here are genuinely good, and for an average multi-day trip the built-in battery provides plenty of light. How far that goes will depend on what you are doing and how long you leave the light running.

The red auxiliary mode is quite bright at 13 lumens. In some situations that is exactly what you want, but in a small space such as a tent it is more light than you need, and there is no way to tone it down.

The last point concerns the head strap. Over a couple of weeks of regular use, the strap and its hardware struggle to hold their tension, so the fit works loose and needs periodic readjustment. It is not a deal breaker, but it is something to be aware of if you prefer to set a headlamp once and forget about it.

Buying Advice

At around $50, the NU33 is a reasonable proposition for what it delivers: a 700-lumen Turbo mode, a 147-yard throw, a 100-degree flood beam, USB-C charging in about an hour and a half, and long runtimes across a well-spaced set of levels. It is small, light, comfortable, and simple to operate, and the port cover and power indicator are both meaningful improvements over the previous generation.

If your priority is a removable battery, this is not the headlamp for you, and it is worth looking at models that accept standard cells instead. If you want one compact light that handles camping, hiking, running, and general around-the-house tasks, and you are happy to charge it over USB-C, the NU33 covers that ground well. The head strap loosening is the one annoyance to plan around, and a quick readjustment is usually all it takes to get the fit back.

Conclusion

The Nitecore NU33 is a strong performer and a clear improvement over the NU32. It is smaller, lighter, comfortable to wear for hours, and offers plenty of illumination through a genuinely varied mode set, with good battery life and fast USB-C charging to back it up. The port cover finally works the way it should, and the four-dot power indicator is far more useful than a single blinking light.

The trade-offs are real but manageable. The battery cannot be removed, the red mode is brighter than ideal in tight spaces, and the head strap needs occasional attention. Weighed against what the headlamp does well, those are reasonable compromises, and for most buyers looking for a dependable, lightweight headlamp at a sensible price, the NU33 is easy to recommend.