Fitbit Sense 2
Fitbit
by Apple • Model: Ultra 2 (A2986/A2987)
The Apple Watch Ultra 2 is a Class II medical device featuring an electrical heart sensor that allows users to take an on-demand ECG similar to a single-lead electrocardiogram. It uses the ECG app to record the timing and intensity of electrical signals that make the heart beat. Additionally, it provides passive monitoring via the Irregular Heart Rhythm Notification (IHRN) feature, which utilizes an optical sensor to screen for signs of Atrial Fibrillation (AFib) during rest or sleep.
Eligibility may vary by provider and plan. Check with your HSA/FSA administrator for specific details.
Evidence-based evaluation by medical professionals
"A powerhouse wearable that seamlessly integrates high-fidelity cardiac screening into a ruggedized, multi-sport platform."
The Apple Watch Ultra 2 represents the pinnacle of consumer health wearables, offering a robust suite of sensors housed in an aerospace-grade titanium chassis. Its primary clinical utility centers on the FDA-cleared ECG app, which utilizes a single-lead (Lead I) electrical heart sensor integrated into the Digital Crown. Clinical trials for the ECG app demonstrated a 99.6% specificity in classifying sinus rhythm and 98.3% sensitivity in detecting Atrial Fibrillation (AFib) for classifiable recordings. Beyond spot-checks, the device features an Irregular Rhythm Notification (IRNF) system that passively monitors pulse intervals via the optical heart sensor (PPG), alerting users to potential undiagnosed AFib. The Ultra 2 also includes a blood oxygen (SpO2) sensor and a temperature sensor for cycle tracking and sleep health. While the manual emphasizes that these features are not intended for medical diagnosis, the high correlation between the Ultra 2's data and clinical-grade equipment makes it a vital tool for longitudinal health surveillance in active populations.
Ranked #3 of 7 clinically evaluated smartwatches with ecg devices
While ranked #3 in our clinical evaluation, this device may offer specific advantages based on individual patient needs and use cases. Review the top-rated device to understand key performance differentiators.
Verified retailers and current pricing
Lowest current market price as of March 2026; FSA/HSA eligible.
Refurbished units often available starting at $419.99.
Official MSRP; eligible for Apple Trade-In program.