Older Pixel watches just received a major alarm feature from the Pixel Watch 5

Credit: Kaitlyn Cimino / Android Authority TL;DR Google is rolling out the Smart Wake alarm feature to the Pixel Watch 2, 3, and 4 as part of the September 2026 Wear OS 7 update. This feature was originally introduced with the Pixel Watch 5. Smart Wake monitors heart rate and subtle movement for a 30-minute window before your set alarm time, then wakes you with gentle haptic vibrations during lighter sleep phases to reduce morning grogginess.