The Apple Watch Series 4 Smartwatch, GPS   Cellular LTE Version. 40mm Space Gray Aluminum Case with Black Sport Band. Model: A1975.

Please Note: Apple Watch Series 4 (GPS Cellular) requires an iPhone 6 or later with iOS 12 or later. Wireless service plan required for cellular service. Apple Watch and iPhone service provider must be the same.

Features:
- OLED Retina Display (324x394) with Force Touch
- S4 Chip with 64-bit dual-core processor
- W3 Apple wireless chip
- Wi-Fi 802.11b/g/n 2.4GHz and Bluetooth 5.0
- Water resistance rating of 50 meters
- Electrical and Optical heart sensor
- Built in Speaker and Microphone
- 16GB Capacity
- Ceramic and sapphire crystal back