Apple Watch great condition. My husband lost it so I bought him one for Christmas and found the lost one. Overview Low and high heart rate notifications. Emergency SOS. New Breathe watch faces. Automatic workout detection. New yoga and hiking workouts. Advanced features for runners like cadence and pace alerts. New head-to-head competitions. Activity sharing with friends. Personalized coaching. Monthly challenges and achievement awards. You can use Walkie-Talkie, make phone calls, and send messages. Listen to Apple Music¹ and Apple Podcasts. And use Siri in all-new ways. Apple Watch Series 3 lets you do it all right from your wrist. Features GPS Optical heart sensor Digital Crown S3 with dual-core processor Accelerometer and gyroscope Swimproof² watchOS 5 Aluminum case ¹Apple Music requires a subscription. ²ISO standard. Appropriate for shallow-water activities like swimming. Submersion below shallow depth and high-velocity water activities not recommended. Apple Watch Series 3 (GPS) requires an iPhone 6s or later with iOS 13 or later. Specifications Key Specs Voice Assistant Built-inInfo Siri Global PositioningInfo GPS Usage Time 18 hours Operating System Compatibility Apple iOS Touch ScreenInfo Yes Internal Memory CapacityInfo 8 gigabytes Operating SystemInfo watchOS Metrics Measured Cadence, Heart rate Screen SizeInfo 42 millimeters Water Resistant Yes Maximum Depth of Water Resistance 164 feet Band Material Fluoroelastomer Works WithInfo Siri SeriesInfo Series 3