When Halliday first showed up with its smart glasses at CES 2025, the pitch sounded like the kind of thing that could finally make “AI on your face” feel practical. The reality, at least in the demo I tried, was much less convincing. The glasses relied on a tiny, movable display window embedded into the frame—an idea that was clever on paper, but finicky in practice. In my case, it wasn’t just that the display was hard to see; it was hard to see comfortably. After about half an hour, my eyes felt strained in a way that made me stop thinking about the tech and start thinking about relief.
So when Halliday reached out a few weeks later to say its second attempt—the Halliday Gen 2—was “much better,” I didn’t assume it meant “better” in the usual incremental sense. I assumed it meant they’d learned something fundamental about what makes a wearable display usable. After spending time with the Gen 2, it’s clear that’s exactly what happened: the most noticeable change is the display approach itself, and the improvement isn’t subtle. The glasses feel more immediately workable, less like a prototype you’re trying to decode, and more like a product you can actually live with for longer than a demo.
But the Gen 2 story isn’t only about swapping one display mechanism for another. It’s also about what Halliday appears to have accepted from the broader smart-glasses landscape: if the display is uncomfortable or unreliable, everything else becomes irrelevant. You can have great AI features, good audio, and useful software—but if the screen experience makes people squint, hunt for the sweet spot, or strain their eyes, adoption won’t happen. The Gen 2 is Halliday’s attempt to remove that barrier.
A display that doesn’t demand perfect alignment
The original Halliday glasses were built around a secret weapon: a small, movable display window inside the frame. That design aimed to solve a classic problem in head-worn displays—how to get an image to land where your eyes can use it—without turning the glasses into bulky goggles. In theory, a movable window could help “steer” the image into view.
In practice, that steering came with a cost. During the CES demo, the display was incredibly finicky to see. It wasn’t simply that the brightness or clarity wasn’t great; it was that the experience depended heavily on getting the window positioned just right. That kind of sensitivity might be tolerable in a lab setting, but it’s a poor match for everyday wear. Your head moves. Your posture changes. Lighting shifts. And your eyes shouldn’t have to do extra work just to read something that should be effortless.
Halliday’s Gen 2 removes that “secret display window” entirely. Instead, the glasses use a more traditional display approach—one that doesn’t require the same kind of precise, finicky viewing behavior. The result is that the display is easier to see right away, without the same feeling of hunting for the correct angle or position.
This matters because comfort in smart glasses isn’t just about weight or fit. It’s also about visual stability. When a display is hard to lock onto, your eyes compensate by constantly adjusting focus and angle. Over time, that compensation becomes strain. By making the display more consistent, Halliday is addressing the part of the experience that directly led to achy eyeballs in the first-gen demo.
“Better” isn’t just clearer—it’s more usable
It’s tempting to judge a wearable display by raw specs: brightness, resolution, contrast, field of view. Those things matter, but they don’t fully explain why one pair of glasses feels usable and another feels like a chore. Usability is often about friction—how quickly you can get from “I put them on” to “I can actually use the screen.”
With the Gen 2, the friction is lower. The glasses feel more usable immediately, which suggests the new display design is doing a better job of meeting your eyes where they already are. That’s a subtle shift, but it’s the difference between a device you can try for a few minutes and a device you can imagine wearing for longer stretches.
There’s also a psychological component. The original design made the display feel like something you had to manage. The Gen 2 feels more like something you can rely on. That reliability is what turns a novelty into a tool.
Why smart glasses keep stumbling at the same point
Smart glasses have been chasing the same holy grail for years: a display that’s visible enough to be useful, transparent enough to feel natural, and comfortable enough to wear without fatigue. The industry has tried multiple paths—waveguides, microdisplays, projection systems, and hybrid approaches that combine optics with clever mechanical positioning.
Halliday’s first-gen concept was one of those “clever” paths. It attempted to solve the alignment problem with a movable element. But the CES experience highlighted a truth that many teams eventually learn: the more a display depends on precise positioning, the more it will punish real-world movement. Even if the image is technically present, the user experience can still fail if the system requires constant adjustment.
The Gen 2’s move toward a more traditional approach suggests Halliday is aligning itself with a broader lesson from the category: the best display is the one that stays stable for the user, not the one that can theoretically be tuned into view.
Comfort is a feature, not a footnote
One of the most telling parts of the Gen 2 improvement is that it directly targets the discomfort issue. In the original demo, the display wasn’t just difficult—it was uncomfortable enough to cause eye strain within a short session. That’s not a minor complaint. If a wearable display causes discomfort, it limits how long people will tolerate it, and it undermines trust in the device.
By removing the finicky window and replacing it with a display method that’s easier to see consistently, Halliday is treating comfort as a core requirement. That’s the right direction for any company trying to build smart glasses for everyday use.
And it’s worth noting that comfort improvements often come from optical design choices that users never see. They don’t know what changed inside the frame, but they feel the difference immediately. That’s exactly what happened here.
What this implies about Halliday’s product strategy
Halliday’s first-gen glasses were ambitious, and ambition can be a double-edged sword. It can lead to innovative solutions—but it can also lead to over-optimizing for a concept rather than the lived experience. The Gen 2 reads like a course correction.
Instead of doubling down on the original display mechanism, Halliday appears to have prioritized the part of the experience that mattered most: the ability to see the display comfortably and reliably. That suggests the company is willing to rethink foundational design decisions rather than simply patching around them.
That willingness is important because smart glasses aren’t like phones where you can iterate on software and call it a day. The display experience is deeply tied to hardware. If the hardware experience is wrong, software improvements won’t fix it.
How the Gen 2 fits into the wider smart-glasses conversation
At CES 2025, Halliday wasn’t alone. Several other smart glasses were on the show floor, each with its own approach to display and interaction. Some focused on audio-first experiences. Others leaned into different optical strategies. The common thread across the category was that the display problem remains stubborn.
What makes Halliday’s Gen 2 interesting is that it seems to be moving in the direction that many users implicitly want: a display that doesn’t require special effort to view. In a crowded field, that kind of usability improvement can be a differentiator even if the underlying technology isn’t the flashiest.
In other words, Halliday may not be trying to win the “most novel optics” contest anymore. It’s trying to win the “most livable experience” contest.
The real test: can you forget the display?
There’s a simple way to evaluate smart glasses displays: do you notice them, or do you forget them? If you’re constantly aware of the display—because you’re adjusting your head, squinting, or searching for the image—then the device is asking too much of you.
With the Gen 2, the display feels less like something you have to manage. That doesn’t mean it’s invisible or perfect, but it suggests the glasses are closer to the point where the user can focus on the content rather than the optics.
That’s a big deal for AI wearables. The promise of AI on your face is that it can respond quickly and contextually while you go about your day. If the display experience interrupts your attention or causes fatigue, the AI becomes a distraction instead of an assistant.
Design changes that affect more than vision
Display hardware changes can ripple into other aspects of the product. A movable window mechanism isn’t just an optical choice; it can influence how the frame is built, how the device balances weight, and how stable the image feels during motion. Removing that mechanism likely simplifies the internal structure and reduces variables that can affect viewing consistency.
Even if the Gen 2’s external look doesn’t scream “major redesign,” the internal shift from a finicky movable window to a more traditional display