Personal Devices · Recorded milestone
Smart ring
Recorded year2016
A ring packed with optical, temperature and motion sensors tracks sleep, heart rate and recovery with no screen to look at.
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- Light-emitting diodeRecorded · 1962requires
- Lithium-ion batteryRecorded · 1991enables
- MEMS sensorsRecorded · 1993enables
- SmartphoneRecorded · 1994enables
- App storesRecorded · 2008requires
- Fitness trackerRecorded · 2009enables
Led to
Sources & evidence
Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.