Apple Watch Ultra 4 review: The health upgrade that finally eases battery anxiety
indianexpress.com Oct 11, 2026

Apple Watch Ultra 4 review: The health upgrade that finally eases battery anxiety

AI-summarised brief · reviewed before publication

Apple released the Watch Ultra 4, which retains the same rugged design but adds a new array of ECG electrodes and optical sensors on the back. The upgraded sensors deliver more accurate heart‑rate data, including five‑second updates and a two‑minute history, and enable new health metrics. Despite no battery size increase, the Ultra 4 now lasts two days under normal use with cellular, and nearly four days in low‑power mode, reducing the need for frequent charging. The watchOS 27 update also streamlines app discovery, enhancing overall usability.

💡 Why It Matters

  • · The extended battery life and richer health data position the Ultra 4 as a practical tool for professionals who rely on continuous monitoring, potentially reshaping how chronic‑condition patients manage daily wellness.