
Apple Watch Ultra 4: AI-Driven Health Upgrades and Longer Battery Life
The Apple Watch Ultra 4 refines the Ultra 3 with a longer battery life (up to 50 hours normal, 84 hours in low power, and 45 hours GPS), smarter health tracking via enhanced sensors and readiness metrics, and S11-powered AI features like faster Siri and a live rewind tool. It keeps the rugged design with subtle refinements and suits first-time buyers or Ultra 3 owners who value endurance and deeper health insights, though upgrades may not be essential for satisfied Ultra 3 users.












