Apple Watch Series 4 (GPS Cellular) Case Size 40mm, 44mm Features GLONASS, Galileo, and QZSS, Barometric altimeter, 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 feedbackCase and band combinations can be made within collections (Apple Watch, Apple Watch Nike, and Apple Watch Hermès) only Apple Watch Series 6, Apple Watch SE, and Apple Watch Series 3 require an iPhone 6s or later with iOS 14 or later Features are subject to changeThe Apple Watch Series 4 Nike is fully unlocked, opening up your cell service options As of right now, the four major cellular service providers in the United States offer plans to accommodate the Apple Watch Those providers are AT&T, who was the first provider to team up with Apple, Verizon, TMobile, and Sprint Hands On With The Nike Apple Watch Series 4 Appleinsider Apple watch nike series 4...