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Pebble Index O1 Smart Ring
The bottom line: Prices are stable. If price is a concern, check the Oura Ring 4 instead.
The Pebble Index O1 is a smart ring designed for voice-memo capture, created by Eric Migicovsky (founder of the original Pebble smartwatch). Press the button, speak your thought, and it's transcribed and organized by AI. It uses replaceable batteries lasting up to 2 years — no charging needed.
$299.00
All-time low: $299.00Last tracked price · Verify on Amazon Affiliate link — we may earn a commission.
Released: March 2026Subscription: NonePlatform: iOS 15.0+, Android 10.0+
Pros & cons
What we like
- Incredibly affordable at $75-99
- No charging needed — replaceable battery lasts ~2 years
- Simple one-button voice memo capture
- AI transcription and organization of notes
- No subscription required
- From the creator of Pebble smartwatch
What could be better
- Brand new — just started shipping March 2026
- NOT a health tracker — no heart rate, sleep, or SpO2
- Very limited feature set compared to Oura/Samsung
- No display or notifications
Key features
One-button voice memo capture
AI transcription and note organization
Replaceable battery — lasts up to 2 years
Built-in microphone for clear voice capture
Lightweight minimalist ring design
No charging dock needed
Who is this for?
Best for
People who want a simple, affordable way to capture voice memos and ideas on the go — especially those who dislike charging wearables.
Not ideal for
Anyone looking for health/fitness tracking, sleep monitoring, or a full-featured smart ring. This is purely a voice-memo device.
How it scores
Review scores
Android Authority Top CES 2026 Gadget
The Gadgeteer Recommended
Tom's Guide Exciting
Specifications
| Battery Life | Up to 4 days |
|---|---|
| AI | On-device processing |
| Features | Voice notes, gestures, health AI |
| Connectivity | Bluetooth 5.4 |
| Weight | 5g |
Compatibility
iOS Supported (15.0+)
Android Supported (10.0+)
Companion App Pebble