Apple Watch Series 3 (GPS, 42mm) Space Gray Aluminum Case with Black Sport Band Condition: New Brand Apple Color Space Gray Aluminum with Black Sport Band Compatible Devices IPhone 5s or later Screen Size 42 Millimeters Operating System WatchOS Style Watch Connectivity Technology Bluetooth, Wi-Fi, GPS Case Material Aluminum Band Material Type Fluoroelastomer Supported Application Fitness Tracker, Sleep Monitor, GPS, Pedometer, Heart Rate Monitor About this item Retina display Swimproof Optical heart sensor Stores music, podcasts, and audiobooks Technical Details Apple Watch Series 3 (GPS) Case Size 38mm, 42mm Features GLONASS, Galileo, and QZSS, Barometric altimeter, Optical heart sensor, Accelerometer and gyroscope, Ion-X strengthened glass, Composite back Whats in the box Case, Band (either S/M or M/L length), 1m Magnetic Charging Cable Connectivity Wi-Fi (802.11b/g/n 2.4GHz), Bluetooth 4.2 Power Up to 18 hours of battery life Width 33.3mm Depth 11.4mm Case Weight 36.7g Release date 9/22/2017