FILE- In this Sept. 21, 2018 file photo customers look at Apple Watches at an Apple store in New York. A huge study suggests the Apple Watch sometimes can detect a worrisome irregular heartbeat. But experts say more work is needed to tell if using wearable technology to screen for heart problems really helps.
FILE- In this Sept. 21, 2018 file photo customers look at Apple Watches at an Apple store in New York. A huge study suggests the Apple Watch sometimes can detect a worrisome irregular heartbeat. But experts say more work is needed to tell if using wearable technology to screen for heart problems really helps. Patrick Sison, File AP Photo
FILE- In this Sept. 21, 2018 file photo customers look at Apple Watches at an Apple store in New York. A huge study suggests the Apple Watch sometimes can detect a worrisome irregular heartbeat. But experts say more work is needed to tell if using wearable technology to screen for heart problems really helps. Patrick Sison, File AP Photo