AI Wearable Smart Ring

Pebble Index 01

by Core Devices

$75.00 Pre-order

Pebble Index 01 is a smart ring designed as "external memory for your brain." Press the button, whisper a thought, and it's recorded and sent to your phone where an on-device LLM converts it to notes, reminders, or actions. It requires no charging (silver-oxide battery lasts years), no internet connection, and no subscription. Built with open source software.

Form factor Ring

Release date Mar 1, 2026

Battery life Years of average use (silver-oxide battery, ~12-15 hours recording capacity)

OS / Platform Open source (Pebble App, iOS/Android)

Weight 4.7g

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Specifications

Form factor Ring

Dimensions 2.95 mm thick, 6.6 mm wide

Weight 4.7g

Storage internal memory for recordings

Battery life Years of average use (silver-oxide battery, ~12-15 hours recording capacity)

OS / Platform Open source (Pebble App, iOS/Android)

Water resistance 1M water-resistance

Release date Mar 1, 2026

Connectivity

Bluetooth

AI features

On-device AIVoice Assistant

Sensors

MicrophoneButton

Primary use cases

Personal AssistantProductivity

Colors

Polished GoldMatte BlackPolished Silver

Additional information

SOURCING & VALIDATION Official product page: https://repebble.com/index All specs from official FAQ/spec table on product page Weight (4.7g, size 10), dimensions, materials, water resistance confirmed on official page Price ($75 pre-order / $99 retail) from official page Open source: https://github.com/coredevices/mobileapp CAD designs available: https://github.com/coredevices/hardware