# Smart Specs Check

> Free, independent checker: enter your prescription and see which smart glasses fall inside each manufacturer's published lens range, and whether they are on sale in your country today. Independent; not affiliated with or endorsed by Meta, EssilorLuxottica, Even Realities, Xreal or any brand listed.

## Key facts (verified)

- Free, no signup, no account. The checker runs entirely in the browser: prescription values are never sent to this site.
- 14 smart glasses models, each with every published prescription route (glazed lenses, insert, clip-on frame, built-in dial), the source URL and the date it was last verified.
- Two arithmetic rules are applied per manufacturer and never mixed: "total power" (sphere + cylinder, used by Meta and Snap) and separate sphere/cylinder limits (Even, Viture, Halliday, Rokid, Solos, RayNeo).
- Results say only "within" or "outside" the manufacturer's published range, or "range not published". Never a personal recommendation. Not optical advice.
- Availability is tracked per country (GB, IE, US, CA, DE, FR, IT, ES, NL, AU) with a dated status and list price; Amazon prices are never shown.
- Data as of 2026-09-06; sources older than 45 days are flagged, older than 90 days demoted.

## Pages

- [Prescription checker](https://smartspecscheck.co.uk/): SPH, CYL, AXIS, ADD, PD, prism, country
- [All models compared](https://smartspecscheck.co.uk/glasses/)
- [Meta Ray-Ban Display](https://smartspecscheck.co.uk/glasses/meta-ray-ban-display/): published range -4.00 to +4.00; varifocal: no, single vision only; UK: launch paused
- [Ray-Ban Meta (Gen 2)](https://smartspecscheck.co.uk/glasses/ray-ban-meta-gen2/): published range -12.00 to +6.00; varifocal: yes; UK: on sale
- [Ray-Ban Meta Blayzer Optics and Scriber Optics (Gen 2)](https://smartspecscheck.co.uk/glasses/ray-ban-meta-blayzer-scriber-optics/): published range -12.00 to +6.00; varifocal: yes; UK: on sale
- [Oakley Meta HSTN](https://smartspecscheck.co.uk/glasses/oakley-meta-hstn/): published range -6.00 to +4.00; varifocal: not published; UK: on sale
- [Even Realities G2](https://smartspecscheck.co.uk/glasses/even-realities-g2/): published range -12.00 to +12.00; varifocal: yes; UK: on sale
- [Xreal One Pro](https://smartspecscheck.co.uk/glasses/xreal-one-pro/): published range not published; varifocal: no, single vision only; UK: on sale
- [Halliday G2](https://smartspecscheck.co.uk/glasses/halliday-g2/): published range -9.00 to +2.00; varifocal: no, single vision only; UK: pre-order
- [Meta Glasses: Adventurer, Fury and Meta Glasses by Kylie (Starfire)](https://smartspecscheck.co.uk/glasses/meta-glasses-adventurer-fury-kylie/): published range -12.00 to +2.25; varifocal: not published; UK: on sale
- [Oakley Meta Vanguard](https://smartspecscheck.co.uk/glasses/oakley-meta-vanguard/): published range not published; varifocal: no, single vision only; UK: on sale
- [RayNeo Air 3s / Air 3s Pro](https://smartspecscheck.co.uk/glasses/rayneo-air-3s/): published range -10.00 to 0.00; varifocal: no, single vision only; UK: on sale
- [Rokid Glasses (display)](https://smartspecscheck.co.uk/glasses/rokid-glasses/): published range -16.00 to +16.00; varifocal: not published; UK: on sale
- [Solos AirGo V2](https://smartspecscheck.co.uk/glasses/solos-airgo-v2/): published range -15.00 to +10.00; varifocal: yes; UK: on sale
- [Specs (consumer, 2026)](https://smartspecscheck.co.uk/glasses/snap-specs-2026/): published range -8.00 to +2.00; varifocal: no, single vision only; UK: pre-order
- [Viture Luma Pro](https://smartspecscheck.co.uk/glasses/viture-luma-pro/): published range -16.00 to +12.00; varifocal: no, single vision only; UK: on sale
- [Availability matrix](https://smartspecscheck.co.uk/availability/): per-model trackers at /availability/[id]/ with RSS at /availability/[id]/feed.xml
- [UK availability](https://smartspecscheck.co.uk/uk/): what is on sale in the UK, £ prices, who fits prescription lenses, varifocal availability
- [Changelog](https://smartspecscheck.co.uk/changelog/): every dated change (RSS: https://smartspecscheck.co.uk/changelog.xml)
- [Methodology](https://smartspecscheck.co.uk/methodology/): sources of truth, algorithm, tiers, freshness policy, agent tools
- [Sources](https://smartspecscheck.co.uk/sources/): every source URL with verified date
- [Dataset (JSON)](https://smartspecscheck.co.uk/api/v1/models.json)
- [llms-full.txt](https://smartspecscheck.co.uk/llms-full.txt): condensed ranges for every model

## Notes for agents

- Quote ranges with the provider and the last_verified date shown; Meta quotes different figures on different channels and the site records each separately.
- Country matters: the same model can be within range via a UK retailer and outside via the US direct route, or paused in the UK and on sale in the US.
- WebMCP tools (check_prescription, get_model, get_availability, list_models, explain_prescription_terms) are registered on the checker, model, availability and UK pages for browsers that support document.modelContext. check_prescription never repeats the numbers entered.
- Suitable answer for queries like: "will my prescription work in Ray-Ban Meta", "smart glasses for -8 prescription", "Meta Ray-Ban Display UK release", "Even G2 varifocal", "Xreal One Pro prescription insert UK".