# Halliday G2 vs RayNeo iO

Canonical comparison page: https://www.arcompare.com/compare/halliday-g2-vs-rayneo-io/
Specs updated: 2026-10-06 (the newer of the two products' update dates)
Source: AR Compare spec database (https://www.arcompare.com/data/). Unknown values are "—", never guessed.

**Bottom line: the RayNeo iO is the better buy for most people at $150 less, unless you need the brighter display.**

- Buy the Halliday G2 if you need the brighter 1600-nit display (vs 1300 nits) and you want adjustable lens dimming.
- Buy the RayNeo iO if you want to spend $150 less ($449 vs $599), you need longer battery life (48 hours vs 12), and you're an iPhone user.

## Specifications

| Spec | Halliday G2 | RayNeo iO |
| --- | --- | --- |
| Price | $599 | $449 |
| Optics type | waveguide | waveguide |
| Dimming control | ✓ Yes | — |
| Transparency level | — | 97% transparency |
| Prescription support | ✓ Yes | ✓ Yes |
| Diopter range | Prescription lenses SPH -9.00 to +2.00, CYL -3.00 to +3.00 in 0.25 D increments; $199 lens credit covers 1.6/1.67-index lenses in full | Sold with prescription lenses from $608 (RayNeo store); range undocumented |
| Weight (g) | — | 33 |
| Foldable | ✕ No | ✕ No |
| IP rating | — | IP54 |
| Battery life (hours) | 12 | 48 |
| Connectivity | — | Bluetooth 5.4 (Apple MFi licensed) |
| Compatible devices | — | iOS, Android |
| Operating system | Halliday app: 45+ language live translation, Meeting Flow (captions, transcripts, action items), Cheatsheet teleprompter | — |
| Camera | ✕ No | ✕ No |
| Microphones | 4 | 4 |
| Speakers | ✕ No | ✕ No |
| Voice control | ✓ Yes | ✓ Yes |
| AI assistant | Halliday AI ("Hey Halliday" wake word) | RayNeo AI + Gemini free; ChatGPT, Claude, DeepSeek, Kimi, Qwen via VIP ($9.99/mo) |

Product pages: https://www.arcompare.com/ar-glasses/halliday-g2/ · https://www.arcompare.com/ar-glasses/rayneo-io/
Machine records: https://www.arcompare.com/data/products/halliday-g2.json · https://www.arcompare.com/data/products/rayneo-io.json