LTPO OLED Retina Touchscreen Display,Digital Crown with Haptic Feedback,Generate Your Own ECG,Fall Detection + SOS Emergency,Heart Rate Monitor with Notifications,Hands-Free Calling + Siri Integration,Built-In GPS, GLONASS, Galileo & QZSS,Wi-Fi & Bluetooth Wireless Technology.Up to 18 Hours of Battery Life,Water-Resistant up to 164′

64-bit dual-core S4 processor. Up to 2x faster than S3 processor
Electrical heart sensor (ECG app)
Second-generation optical heart sensor
Fall detection
Digital Crown with haptic feedback



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