R1
The Even Realities R1 is a $249 smart ring, shipping since 2025. Zirconia-ceramic companion ring that discreetly controls Even Realities' G2 glasses while tracking heart rate, HRV, SpO₂, temperature, activity and sleep, with a four-day battery.
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Generations
| Generation | Year | Status | Price | Weight |
|---|---|---|---|---|
| R1 | 2025 | Shipping | $249 | Not disclosed |
Specifications by generation
R1
2025ShippingZirconia-ceramic companion ring that discreetly controls Even Realities' G2 glasses while tracking heart rate, HRV, SpO₂, temperature, activity and sleep, with a four-day battery.
- Category
- Ring
- Worn
- Finger
- Release
- 2025
- Price
- $249
- Weight
- Not disclosed
- Sensors & hardware
- Biometric
- Motion
- Input
Developer access
- R1 input via Even Hub public stable
- Touch and swipe events
- Ring device status
- R1 with G2
- Android / iOS companion WebView
Accessory input for G2 plug-ins through the companion app; raw biometric access and standalone ring applications are not documented.
- Documentation
- public
- App distribution
- available
Developers can package .ehpk plug-ins, test private/beta builds, then submit for review and publish in the portal; local QR testing is documented.
- Vendor servers
- feature-dependent
Even Hub Cloud provides production hosting and distribution. Plug-in logic runs in the phone WebView, with Bluetooth to G2; this does not establish that all stock features work offline.
Openness
- hardwareNot verified
- firmwareNot verified
- companion appsNot verified
- SDKpartialSource
- backend servicesNot verified
Openness, servers & distribution
- hardware
Schematics, mechanical designs and firmware publication were not verified.
- firmware
Source availability and licensing were not established in this review.
- companion apps
Source availability and licensing were not established in this review.
- SDK
Official MIT-licensed starter templates are published. The complete SDK implementation/license was not established from these templates; no firmware, companion or backend openness is implied.
Source · MIT (starter templates only)- backend services
Source availability and licensing were not established in this review.
- Direct / local access
QR testing loads a local development server through the companion app; no direct Bluetooth API in the public G2 SDK.
- Self-hosting
Developer-hosted PWA alternative is documented; replacement of the vendor companion app or complete backend is not established.
- Own backend
Plug-ins can call their own APIs with declared network-domain permissions and valid CORS headers.
- Distribution notes
Architecture docs also describe developer-hosted PWA distribution without portal packaging or review; the companion bridge is still required for device APIs.
Company & funding
Even Realities Ltd
Disclosed outside financing; partial history
- Disclosed funding
- USD 159M
Reported cumulative venture financing. Reported total includes earlier financing; round history below is incomplete.
- Latest disclosed valuation
- USD 1B
Disclosed valuation; pre-money or post-money basis not specified.
- Disclosed rounds
- 1
Among makers in the index
Rounds
2026-07-06announced
Pre-Series BUSD 150M
Led by Meituan and Tencent
Equity / venture financing
Announced amount; closing date not disclosed.
Valuation USD 1B · basis unspecified
Disclosed valuation; pre-money or post-money basis not specified.
Company
Official support lists Hong Kong Even Realities Limited, Even Realities Ltd (Shenzhen), Even Realities Co., Ltd. (Japan), and Even Realities US Inc. as affiliates; exact parent hierarchy remains unknown.
Investors on record
| Investor | Role | Round |
|---|---|---|
| Meituan | Lead investor | Not disclosed · 2026-07-06 |
| Tencent | Lead investor | Not disclosed · 2026-07-06 |
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Independent index — figures are approximate and editorial, not official spec sheets. Methodology. Last reviewed 2026-10-31.