Halliday G2 — specification and verdict
The G2 puts a small binocular micro-LED image in front of both eyes at 25.2 degrees and up to 1600 nits, rated IP54, with about twelve hours of use. It is sold for live professional conversation: captions, translation and notes appearing in your line of sight, and it deliberately has no camera.
Everything runs in Halliday's own phone application, and the company states plainly that the G2 does not integrate with third-party assistants, agents or external models. That is as closed as this comparison gets — there is no path for anyone else's software, ours included.
A neat answer to one specific problem: reading what the other person just said, in a meeting, without looking down. Not a work-instruction device — no camera means no remote expert and no photo record — and Halliday publishes neither a weight nor a shipping country list, which is worth asking about before ordering.
How it compares within its class
The axis runs from the lowest to the highest published figure among the AI glasses devices in this catalogue. The grey tick is the median of that class.
Median for this class: 29°, from 6 models that publish the figure.
Median for this class: 49 g, from 11 models that publish the figure.
Median for this class: 540 min, from 10 models that publish the figure.
Median for this class: 1500 nits, from 7 models that publish the figure.
Median for this class: $499, from 14 models that publish the figure.
Full specification
An em dash means the manufacturer does not publish that figure.
- ManufacturerWho makes it — and who you buy support from.
- Halliday
- CategoryWhich kind of product this is. It decides which rows below make sense at all.
- AI glasses
- Device typeWhere the computing happens, and therefore what you need to run it.
- Phone-powered AR
- AnnouncedThe day it was shown, which is not the day it shipped.
- Announced: not published by the manufacturer
- ReleasedYear the model went on sale. Older is not automatically worse in this category.
- Released: not published by the manufacturer
- AvailabilityWhether you can still order it new today.
- On sale
- Support endsThe date the manufacturer stops supporting it. Decisive for a fleet you are about to buy.
- Support ends: not published by the manufacturer
- DisplayHow the image is produced. "No display" is a real answer in this category, not a gap.
- Waveguide
- Eyes coveredOne eye or both. Over a full shift this is a real difference in fatigue.
- Both eyes
- Resolution per eyePixels delivered to each eye. Higher means small text and labels stay readable.
- 600x300
- Refresh rateImages per second. Higher feels smoother and helps people prone to motion discomfort.
- Refresh rate: not published by the manufacturer
- Field of viewHow much of your view the image covers. Bigger is more immersive, not automatically better for work.
- 25.2°
- Pixel densityPixels per degree of view — the honest way to compare sharpness between a headset and a pair of glasses. Higher is sharper. Only shown where somebody published it; we never compute it ourselves.
- Pixel density: not published by the manufacturer
- BrightnessIn a plant or outdoors, brightness decides legibility more than resolution does.
- 1600 nits
- WeightThe device alone. Anything above roughly 150 g is felt within an hour.
- 49 g
- Visible field of viewWhat the eye actually sees through the optics, by axis.
- Visible field of view: not published by the manufacturer
- Rendered field of viewWhat the device draws. Never smaller than what you see.
- Rendered field of view: not published by the manufacturer
- Binocular overlapWhere both eyes see the same thing — this is where depth happens.
- Binocular overlap: not published by the manufacturer
- Average pixel densityPixels per degree across the image. More is sharper.
- Average pixel density: not published by the manufacturer
- Peak pixel densityThe sharpest point, usually the centre of the lens.
- Peak pixel density: not published by the manufacturer
- Subpixel layoutHow the coloured dots sit in a pixel. A stripe looks cleaner on text than PenTile.
- Subpixel layout: not published by the manufacturer
- Foveated renderingWhether detail is dropped outside where you look, to save performance.
- Foveated rendering: not published by the manufacturer
- Vision correctionHow somebody who wears glasses uses it, and in what dioptre range.
- Official lens inserts · -9 to 2 D
- DimensionsWidth, height and depth of the device itself.
- 152 × 41 × 167 mm
- Weight with strapWith the strap it ships with — the weight you actually wear.
- Weight with strap: not published by the manufacturer
- Head strapSoft band or a rigid one. Decides how the weight sits over an hour.
- Glasses frame
- MaterialsShell and facial interface, in the vendor’s words.
- Materials: not published by the manufacturer
- ColoursColours the manufacturer sells it in.
- Colours: not published by the manufacturer
- Haptics in the headsetVibration in the headset itself, not in the controllers.
- Haptics in the headset: not published by the manufacturer
- TrackingWhether content stays put in the room (6DoF), follows head rotation (3DoF) or is simply fixed.
- None
- Tracking camerasHow many cameras it uses to know where it is.
- Tracking cameras: not published by the manufacturer
- Tracking rateHow often position is recalculated. Higher is steadier.
- Tracking rate: not published by the manufacturer
- Depth sensorA dedicated sensor for distance, on top of the cameras.
- Depth sensor: not published by the manufacturer
- Hand trackingWhether bare hands can operate the interface, without a controller or the phone.
- No
- Face trackingTracks facial expression — for avatars, not for training scenarios.
- Face tracking: not published by the manufacturer
- Body trackingHow much of the body the device knows about. Estimated legs are not tracked legs.
- Body tracking: not published by the manufacturer
- Controllers includedWhether motion controllers come in the box, or are bought separately — or the device is hands-only.
- Controllers included: not published by the manufacturer
- Controller tracking6DoF controllers track position and rotation, so a hand reaches in space; 3DoF only point. “None” means hands only.
- Controller tracking: not published by the manufacturer
- Other input methodsWays in beyond controllers and bare hands.
- Voice · Touchpad on the temple
- Where it computesWhether the device computes on its own or depends on a phone, PC or belt-worn puck.
- Driven by a phone
- ProcessorThe processor and memory inside. This is what the performance grade above is derived from.
- Processor: not published by the manufacturer
- CPUCores and clocks, where the manufacturer publishes them.
- CPU: not published by the manufacturer
- GPUThe graphics part of the chip.
- GPU: not published by the manufacturer
- MemoryRAM on the device. Together with the chipset it sets how complex a scene can be.
- Memory: not published by the manufacturer
- PlatformThe platform an application is built against — and what an MDM has to speak.
- Halliday app (iOS / Android)
- StorageOn-board space for downloaded courses. More matters for an offline library in several languages.
- Storage: not published by the manufacturer
- SD card slotWhether storage can be added with a card.
- SD card slot: not published by the manufacturer
- BatteryRuntime as the manufacturer states it. A hot-swappable pack matters more than the figure.
- 720 min
- Battery capacity (Wh)Energy in the cell. Bigger is longer, given the same power draw.
- Battery capacity (Wh): not published by the manufacturer
- Battery capacity (mAh)The same fact in the other unit vendors use. We never convert between the two.
- 210 mAh
- Charge timeFrom empty to full. Rarely stated by the manufacturer, so it usually comes from whoever timed it.
- Charge time: not published by the manufacturer
- ChargerPower of the supplied charger — it decides the charge time above.
- Charger: not published by the manufacturer
- External batteryBattery on a cable or a puck instead of on the head.
- External battery: not published by the manufacturer
- Charging caseExtra runtime carried in the case the glasses ship with.
- Charging case: not published by the manufacturer
- Hot-swap batteryWhether a charged battery can replace the empty one without ending the session. This is what decides if a headset can hold an all-day training station.
- Hot-swap battery: not published by the manufacturer
- Third-party appsHow a third party's application reaches the device: an ordinary Android package, a vendor-only SDK, or not at all.
- Closed platform
- Runs Skillsive appsOur own statement about whether Skillsive training applications run on it today.
- No
- Suitable for trainingOur judgement on whether it survives real deployment: comfort, hygiene, fleet management.
- Suitable for training: not published by the manufacturer
- Kiosk mode / MDMVendor tooling to enrol devices, push an app and lock the headset to it. Practically required above ten devices.
- No
- Business tierAn official business tier, so devices belong to the company rather than to employees’ personal accounts.
- Business tier: not published by the manufacturer
- CertificationsIndustrial certifications stated on the manufacturer's own page. Empty means unconfirmed, never "probably fine".
- IP54
- PortsPhysical sockets and charging contacts.
- magnetic charging contacts
- Wi-FiThe Wi-Fi generation — it decides how well wireless streaming holds up.
- Wi-Fi: not published by the manufacturer
- BluetoothFor controllers, headphones and accessories.
- 5.4
- Video from a computerWhether a computer can drive it, over a cable or wirelessly.
- Video from a computer: not published by the manufacturer
- AudioBuilt-in sound. Matters most where somebody has to hear a remote expert while working.
- Built-in speakers
- MicrophoneBuilt-in microphone — the other half of talking to a remote expert.
- Yes
- MicrophonesHow many. An array picks a voice out of a noisy hall; one does not.
- 4
- CameraA camera is what makes a remote expert call and photo documentation possible.
- No
- Price bandThe band it sits in, rather than a price that goes stale.
- Mid range
- Launch priceThe manufacturer's launch price. Fixed history, so it never goes stale.
- $599
- Price by configurationWhat each configuration cost at launch.
- Price by configuration: not published by the manufacturer
- Price todayApproximate current net price in USD — a general figure, since these barely differ between regions once tax is stripped out. A snapshot from the date shown, not an offer.
- Price today: not published by the manufacturer
Who this device is for
The Halliday G2 puts a tiny 600x300 waveguide in the top of the frame, so the display sits above your line of sight rather than in it — you glance up rather than through. With twelve hours of battery and a phone doing everything, it is aimed at all-day wear for notifications, translation and prompts.
How it differs from its predecessor
Against the Even G2 it is the same idea with the display in a different place and a closed application model, so what it does is what Halliday's app offers. Against the Meta Ray-Ban Display it is cheaper, camera-free and far less capable — and far easier to wear into a room where cameras are not welcome.
What is missing, and what the manufacturer does not publish
A closed platform: no third-party applications, no SDK in our data, no device management, and our courses do not run on it. Halliday publishes no release year and no display refresh rate in the material we cite, and independent review coverage is dominated by material the company itself distributes.
Halliday G2 — frequently asked questions
- How does the Halliday display above the line of sight work in practice?
- The waveguide sits in the upper part of the frame, so information appears when you glance up rather than overlapping what you are looking at. It is less immersive than a centred display and less distracting — which is the argument for it during a conversation or while walking.
- Can developers build applications for the Halliday G2?
- Not in our data: it is a closed platform, so the functionality is whatever Halliday's own app provides. If building something yourself matters, the open options in this class are Brilliant Labs Frame and the Android-based RayNeo X3 Pro.
Compare this device
Consider these too
The nearest devices in the same class, ranked by availability and launch price — not by our opinion of them.
Specifications checked against the manufacturer's page on 2026-08-04. Manufacturer's specification
Product and company names used here are the trademarks of their respective owners and appear only to identify the hardware being compared. We are not affiliated with, sponsored by or endorsed by any of these manufacturers. Illustrations are our own.