Google Pixel Watch 4 45mm Matte Black Aluminum Obsidian Active Band Wi-Fi

What the Pixel Watch 4 delivers

The Google Pixel Watch 4 is a 45 mm Android smartwatch with a matte black aluminum case and an Obsidian Active Band. It ships new and runs Wear OS with Gemini AI built in. The Actua 360 domed display is 10 percent larger and 50 percent brighter than the previous model while keeping scratch-resistant Gorilla Glass. Dual-frequency GPS, heart-rate monitoring, SpO2 and HRV sensors, plus Loss of Pulse Detection give comprehensive health and fitness insight for everyday users and active people alike.

Battery and charging reality

Up to 40 hours of typical use or 72 hours in Battery Saver mode come from the longest-lasting Pixel Watch battery yet. The new side charging dock adds up to 15 hours of runtime in 15 minutes or less, so a short top-up before a workout is practical. Wi-Fi connectivity keeps notifications and AI replies flowing without a phone nearby, but the watch remains Android-only; iOS users cannot pair or use the health ecosystem.

Capacity and headroom

Onboard storage handles music, offline maps and 40-plus exercise modes with real-time stats on the wrist. The larger, brighter screen and dual-frequency GPS draw more power during long outdoor sessions, so multi-day hikes without a charger will need Battery Saver mode. Buyers who want cellular independence or more than 72 hours between charges should look elsewhere, as the Wi-Fi model tops out at the stated limits.