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ZHUHAI LAB · 57 devices scored ·

Every review lists what we tested, what we did not, and the source behind each figure.

Reviews

The devices that have been through the 0 to 5 rubric, highest score first. The rubric is published at the foot of this page.

57 of the 161 devices in the catalogue have been through the rubric. The rest stay in the catalogue, with a sheet, a review, pros and cons. See the whole catalogue.

How the score is built

The score runs from 0 to 5 and is the sum of five axes. Each axis is four yes-or-no questions about the sheet, and each yes is worth 0.25. It is not an average of other sites' scores: it comes from the sheet, and every answer points at data with a source.

Open to developers
Four questions: the device runs third-party code, the SDK is public, the documentation has an open address, and the system is Android or a derivative. A closed partner program does not count as openness.
Independent evidence
How many publications put the device on their face and wrote about it. The four steps are one, two, three and five independent reviews. Manufacturer material does not count.
All day on your face
Four questions: claimed battery life of four hours or more, weight up to 60 grams, official prescription lenses, and some resistance to water or sweat. A device that dies at ten in the morning does not carry a work day.
What the display delivers
With a display: stated resolution, 1,000 nits or more, a field of view of 25 degrees or more, and an image in both eyes. With no display, the four questions become a 12 MP camera or better, video recording, two microphones and two speakers. A device with no display is judged on what it promises and loses no point for having none.
Price for what it does
The other four axes added up and divided by the price, with the price measured against the median of its own category. The most efficient quarter of the list takes 1; the least efficient quarter, 0.25.

A device gets a score when it is on sale, has a known price, at least two independent reviews and known developer access. A device without a score is not a bad device: it is one the five questions have no ground to answer yet. Its sheet stays in the catalogue, with the full review.

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