Series 4 Review

Uses an improved accelerometer and gyroscope to detect hard falls.

A 64-bit dual-core processor up to twice as fast as Series 3. Series 4

Every model featured a black ceramic and sapphire crystal back for better cellular reception. 📉 The Legacy Uses an improved accelerometer and gyroscope to detect

Alerts for low heart rate, high heart rate, and irregular rhythms (AFib). 🚀 Re-engineered Performance high heart rate

40mm and 44mm sizes replaced the original 38/42mm.