Key result
HEART-Watch dataset provides synchronized Pixel Watch ECG and PPG alongside reference chest ECGs for 40 adults.
Why the study?
Public consumer-grade smartwatch datasets with synchronized cardiovascular biosignals and demographic diversity remain limited, which can lead to biased algorithm development.
Does the Google Pixel Watch provide reliable and synchronized multimodal physiological signals (ECG, PPG, ACC) compared to reference chest ECG in healthy adults across different physical states?
Observational (n=40)
Does the Google Pixel Watch provide reliable and synchronized multimodal physiological signals (ECG, PPG, ACC) compared to reference chest ECG in healthy adults across different physical states?
The HEART-Watch dataset demonstrates that consumer-grade smartwatches can acquire synchronized, high-quality multimodal cardiovascular signals across physical states, though PR interval estimation and walking state ECG quality remain challenging.
Provides public smartwatch biosignal data across physical states in diverse adults; extends algorithm development resources but leaves clinical translation open.
Consumer-grade smartwatches offer a new option for personalized health monitoring for general consumers, as cardiovascular diseases continue to prevail as the leading cause of global mortality. The development and validation of reliable cardiovascular monitoring algorithms for these consumer-grade devices requires realistic biosignal data from diverse sets of participants. However, the availability of public consumer-grade smartwatch datasets with synchronized cardiovascular biosignals remains limited, and existing datasets often lack rich demographic diversity in their participant cohorts, potentially leading to biased algorithm development. This paper presents HEART-Watch, a multimodal physiological dataset of synchronized wrist-worn Google Pixel Watch electrocardiogram (ECG), photoplethysmography, and accelerometer signals from a diverse cohort of 40 healthy adults across three physical states – sitting, standing and walking – alongside reference chest ECG. Intermittent upper arm blood pressure measurements and concurrent biosignals were collected as an additional biomarker for future research. The motivation, methodology, and initial analyses of results are presented. HEART-Watch is intended to support the development and benchmarking of robust cardiovascular algorithms on consumer-grade smartwatches across diverse populations.
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Kaetheeswaran et al. (2026) conducted an observational in Healthy (n=40). Google Pixel Watch (ECG, PPG, ACC) vs. Reference chest ECG was evaluated.
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