Apple Watch Series 4 (2018) 44mm GPS + Cellular - Black Stainless Steel Case & Black Sport Band (Certified Refurbished)

PRODUCT OVERVIEW

Fundamentally redesigned and re-engineered. The largest Apple Watch displays yet. Built-in electrical heart sensor. New Digital Crown with haptic feedback. Low and high heart rate notifications. Fall detection and 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. Built-in cellular¹ lets you use Walkie-Talkie, make phone calls, and send messages. Stream Apple Music and Apple Podcasts. And use Siri in all-new ways - even while you're away from your phone. With Apple Watch Series 4, you can do it all with just your watch!

KEY FEATURES

GPS + Cellular

Over 30% larger display

Electrical and optical heart sensors

Digital Crown with haptic feedback

50% louder speaker

S4 SiP with faster 64-bit dual-core processor

Improved accelerometer and gyroscope for fall detection

Swimproof

watchOS 5