Your Apple Watch can help you meet your sleep goals, track important information related to your heart, check your blood oxygen levels, and encourage you to wash your hands.

Apple Watch can also detect arrhythmias other than Atrial Fibrillation (AFib) according to a new study published this week in the American Heart Association (AMA) journal.

Most wearable fitness trackers, except Apple Watch Series 4’s EKG and irregular rhythm notification features, are not cleared by the FDA or approved to diagnose or treat any conditions, so doctors are wary about using the data to treat patients.

The best Apple Watch is the latest Apple Watch — the Series 7. Not only does the Apple Watch 7 benefit from Apple’s activity tracking sensors, FDA-approved ECG monitor, an always-on display and dedicated App Store, but it has the biggest display of any Apple Watch yet.