Series 4 (GPS) Features
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Series 4 (GPS Cellular) Features
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| Silver aluminum case |
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Silver aluminum case |
| Built-in GPS, GLONASS, Galileo, and QZSS |
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LTE and UMTS |
| S4 with 64-bit dual-core processor |
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Built-in GPS, GLONASS, Galileo, and QZSS |
| W3 Apple wireless chip |
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S4 with 64-bit dual-core processor |
| Barometric altimeter |
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W3 Apple wireless chip |
| Capacity 16GB1 |
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Barometric altimeter |
| Optical heart sensor |
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Capacity 16GB1 |
| Electrical heart sensor |
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Optical heart sensor |
| Improved accelerometer up to 32 g‑forces |
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Electrical heart sensor |
| Improved gyroscope |
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Improved accelerometer up to 32 g‑forces |
| Ambient light sensor |
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Improved gyroscope |
| LTPO OLED Retina display with Force Touch (1000 nits) |
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Ambient light sensor |
| Digital Crown with haptic feedback |
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LTPO OLED Retina display with Force Touch (1000 nits) |
| Louder speaker |
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Digital Crown with haptic feedback |
| Ion-X strengthened glass |
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Louder speaker |
| Sapphire crystal and ceramic back |
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Ion-X strengthened glass |
| Wi-Fi (802.11b/g/n 2.4GHz) |
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Sapphire crystal and ceramic back |
| Bluetooth 5.0 |
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Wi-Fi (802.11b/g/n 2.4GHz) |
| Built-in rechargeable lithium-ion battery |
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Bluetooth 5.0 |
| Up to 18 hours of battery life2 |
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Built-in rechargeable lithium-ion battery |
| Water resistant 50 meters3 |
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Up to 18 hours of battery life2 |
| watchOS 5 |
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Water resistant 50 meters3 |
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watchOS 5 |
