Product Description

Apple Watch Series 3 (GPS) requires an iPhone 5s or later with iOS 11 or later. Apple Watch Series 3 (GPS + Cellular) requires an iPhone 6 or later with iOS 11 or later. Apple Watch and iPhone service provider must be the same. Cellular is not available with all service providers. Roaming is not available outside your carrier network coverage area. Wireless service plan required for cellular service. Contact your service provider for more details.

Band with 38mm case fits 130–200mm wrists.
Band with 42mm case fits 140–210mm wrists.

Series 3 (GPS) Features: Aluminum case; Built-in GPS and GLONASS; Faster dual-core processor; W2 chip; Barometric altimeter; Capacity 8GB; Heart rate sensor; Accelerometer and gyroscope; Water resistant 50 meters; Ion-X strengthened glass; Composite back; Wi-Fi (802.11b/g/n 2.4GHz); Bluetooth 4.2; Up to 18 hours of battery life; watchOS 4.