Apple Watch Ultra 4 Leaks: Thinner Design and 48-Hour Battery Life?

Leaks suggest the Apple Watch Ultra 4 could feature a thinner design and much longer battery life.

The rugged smartwatch is reported to keep a strong focus on health monitoring, fitness, and durability.

Potential features include ECG, blood oxygen tracking, sleep monitoring, and possibly Touch ID.

If true, the changes would make Apple’s next Ultra model better for long outdoor use with less frequent charging.