Refurbished Apple Watch Series 4 GPS - 44mm - Sport Band - Aluminum Case

Apple Watch Series 4 GPS, 44mm Space Gray Aluminum Case, Black Sport Band:
GPS
Over 30% larger display (2)
Electrical and optical heart sensors
Digital Crown with haptic feedback
50% louder speaker (2)
S4 SiP with faster 64-bit dual-core processor
Improved accelerometer and gyroscope for fall detection
Swimproof (3)
watchOS 5
Aluminum case
Selection may vary; see a sales associate for available models.  Apple Watch Series 4 (GPS) requires an iPhone 5s or later with iOS 12 or later. 
(1) Apple Music requires a subscription
(2) Compared with the previous generation
(3) ISO standard 22810:2010.  Appropriate for shallow-water activities like swimming.  Submersion below shallow depth and high-velocity water activities not recommended.