Wuben X4 Review: A Flat EDC Flashlight That Finally Listens to Users

Introduction

Wuben has been refining a distinctive angular, flat-profile flashlight design, and the new X4 is the clearest sign yet that the company is paying attention to what users actually want. It combines a push button, a twisting knob, a slide switch, and a tail switch in one compact body, and it carries a replaceable 18650 battery at a time when most brands have moved away from that. With a claimed 1,500-lumen output and an expected affordable price tag, this is a light worth keeping on your radar.

Design and Build

The X4 sticks with the blocky, flat form factor Wuben has been developing across its recent angular flashlights. It has a heavy-duty belt clip, torque screws on the housing that invite anyone curious about modding or teardowns, and a flush tail cap alongside the switch so the light can sit quietly in a pocket without anything snagging or accidentally switching on.

That balance matters. Some flat-profile lights have drawn complaints about switches sticking out, but here you can operate the tail switch when you want to and leave it effectively dormant when you do not. The body feels hefty in the hand, and the overall design language is cohesive rather than gimmicky.

Replaceable 18650 Battery

This is the feature many users have been asking for. To get to the battery, you slide a locking mechanism into the unlocked position and press a button; the compartment pops open on a sturdy hinge, revealing an O-ring seal and an 18650 cell. In the sample unit, that is a 3,400 milliamp-hour battery. Swap it in, snap the door shut, lock it, and you are back in business.

A replaceable battery means the flashlight can outlast any sealed cell, and it keeps you running on a widely available standard rather than a proprietary pack.

Controls and User Interface

The control layout is the highlight. A slide switch on the body handles mode selection, including a dedicated moonlight position that is easy to find by feel, even in the dark or from inside a pocket. Sliding it all the way forward gives you a very low moonlight output, ideal for finding your way around at night or reading a book without destroying your adaptation.

The main light is controlled with a twisting knob: kick it on and spin to your preferred brightness level, where it stays. Turn the light off and back on and it memorizes that setting, so you are not forced back through turbo every time. The tail switch, by contrast, always goes straight to the full 1,500 lumens for instant maximum output, with a double click for strobe.

Everything can be operated by feel without a long learning curve, which is exactly what you want from a light you carry daily.

Beam Quality and Output

At full output, the X4 puts out a claimed 1,500 lumens with a smooth, seamless hot spot and useful flood alongside it, giving the beam some real distance. Being able to dial brightness precisely with the knob means you can set exactly the level you want, and moonlight makes a sensible starting point before ramping up.

RGB Side Light and Emergency Flashing

Beyond the main emitter, the X4 includes an RGB light setup on the side with a blinking light system. You can toggle between deep blue, yellow, red, and magenta, run a color steady for ambient candle-like light, or use red to preserve night vision. A double click brings up emergency-style flashing, with blinking blue and yellow or blue and red patterns.

It is not a UV light, just a deep blue, but as a secondary utility for signaling, ambient mood, or roadside emergencies, it adds real versatility without complicating the main interface.

Things to Consider Before Buying

The sample shown is a pre-production unit, and the light was launching through a Kickstarter campaign, so expect some refinements compared to early samples. Exact moonlight lumen figures were not specified, and final color options and pricing were not confirmed at the time of the campaign launch.

Buying Advice

If you carry a flashlight every day, the X4 hits an unusual sweet spot: instant turbo from the tail switch, a memorized everyday level from the knob, a safe moonlight you can reach blind, and a battery you can actually replace. The hard lock mode also keeps it from switching on accidentally in a bag or pocket.

For anyone who has wanted a modern flat EDC light without giving up a replaceable 18650, this is one of the most thoughtfully laid-out options we have seen from Wuben so far. Keep an eye out for the Kickstarter campaign if it matches your needs.

Conclusion

The Wuben X4 feels like a company zeroing in on the perfect everyday flashlight. The controls are intuitive, the battery is user-replaceable, and the extra RGB and emergency modes add genuine utility. If the campaign goes as planned, the X4 looks like a solid, practical light with very few compromises.