Apple Watch Series 4 (GPS + Cellular) requires an iPhone 6 or later with iOS 12 or later. Apple Watch Series 4 (GPS) requires an iPhone 5s or later with iOS 12 or later. Wireless service plan required for cellular service. Apple Watch and iPhone service provider must be the same. Not available with all service providers. Not all service providers support enterprise accounts or prepaid plans; check with your employer and service provider. Some legacy plans may not be compatible. Roaming is not available. Contact your service provider for more details.

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

Height: 40mm -$1099
Width: 34mm
Depth: 10.7mm
Case Weight: 39.8g

Height: 44mm -$1149
Width: 38mm
Depth: 10.7mm
Case Weight: 47.9g

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