Olight O'Pen Pro Review: A Pen, a Light, and a Laser in One EDC Tool

Introduction

The O’Pen Pro is the pro version of the O’Pen, a pen with a light built into it. Olight also makes the O’Pen Mini, an ultralight, beautifully machined, colorful bolt-action pen. The Pro takes the same core idea and adds a couple of genuinely new features: the light has moved to the pocket clip, and the bolt mechanism now fires a green laser.

The result is a fairly sophisticated EDC instrument that still works first and foremost as a pen. Here is how it holds up.

Who This Product Is For

This is aimed at people who already carry a pen daily and like the idea of a light being available without carrying a separate flashlight. It also suits anyone who finds occasional use for a laser: pointing things out, astronomy sessions, or highlighting details at a distance.

Because the light sits on the pocket clip rather than the upper barrel, you can actually use it while the pen is still in a pocket or messenger bag. The clip keeps the light from being impeded or pointing forward, so it works as a contained, hands-free light source.

Design and Build

The whole pen is beautifully machined, and everything is operated from the bolt point on the barrel. There is no click cap or twist mechanism; the bolt handles writing, light modes, and the laser. Once you get used to it, the bolt mechanism is easy to operate and cycling through the pen’s features is not a lot of work.

It is slightly bigger than the standard version, but the weight feels about the same, and the whole thing slides together smoothly with O-rings holding the assembly in place.

Light Performance and Runtime

The light has four settings: low, 20, 60, and 120 lumens. Turning it on always starts at the lowest setting, and there is no memory mode, so you cycle upward from there each time. The 120-lumen high setting is a real amount of light from a pen, though with an LED in the clip there is no lens focusing or reflector of any size, so it is a floodier kind of light. Olight claims 14 meters of throw on high, which lights a bit of a room rather than reaching far into the distance.

Runtime is surprisingly good. Full-on 120 lumens gives you 23 minutes, but at 20 lumens you get around two hours, which is plenty for most tasks. Drop to the 5-lumen low setting and you get eight hours of light, which turns this into a true EDC item for navigating in the dark.

The Green Laser

Pull the bolt upward and the pen fires a solid green laser. It is a real, usable laser for pointing things out, highlighting, astronomy use, or playing with pets. This is the feature that most clearly separates the Pro from the standard O’Pen, and it is operated in one quick motion without changing your grip on the pen.

Refills and Charging

The Pro uses a standard pen refill, and it comes with two of them in the box. The presentation packaging is a plastic box that holds the pen plus an extra refill, with the USB-C charging cable wrapped around the frame. That is a nice touch given how far beyond a basic pen this instrument has become.

For charging, the rear section opens to reveal the port, and that section also serves as the activation point for the light, so the light can be used individually away from the barrel. The fit is smooth and precise, though note that the pen is not watertight because of the hole in the back end.

Buying Advice

If you want a dependable everyday pen that quietly carries a genuinely useful light and a laser, the O’Pen Pro covers all three without compromising the writing experience. The 5-lumen low mode with eight hours of runtime is the standout for daily EDC use, and the clip-mounted light is more practical than the old barrel placement for anyone who keeps the pen in a bag or pocket. If you never see yourself using a laser, the standard O’Pen or the O’Pen Mini may be the better fit, but the Pro is the one to get if you want the full feature set.

Conclusion

The O’Pen Pro is a real pen first, with a well-executed four-mode light and a solid green laser layered on top, all driven from one bolt mechanism. With standard refills, USB-C charging, and runtimes ranging from 23 minutes to eight hours, it feels like a thoughtfully engineered EDC tool rather than a gimmick. Olight is clearly continuing to innovate on this design, and the Pro is a strong example of where that is heading.