64-bit dual-core S4 processor. Up to 2x faster than S3 processor
Electrical heart sensor (ECG app)
Second-generation optical heart sensor
This is a 100% authentic Apple Watch Series 4 (GPS + Cellular, 44MM) – Space Black Stainless Steel Case with Black Sport Band (Renewed) . The team’s authentic Apple Watch Series 4 (GPS + Cellular, 44MM) – Space Black Stainless Steel Case with Black Sport Band (Renewed) has the official name and number on the back. With the Apple Watch Series 4 (GPS + Cellular, 44MM) – Space Black Stainless Steel Case with Black Sport Band (Renewed) name and logo on the front, this product is the perfect gift for the Apple Watch Series 4 (GPS + Cellular, 44MM) – Space Black Stainless Steel Case with Black Sport Band (Renewed) fan in your life.
Fall detection
Digital Crown with haptic feedback
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