SIM Type: eSIM
Operating System: watchOS 10
Network Technology: 4G LTE
HSPA/UMTS (3G/4G): 850, 1700, 1900
4G LTE (Domestic): 2, 4, 5, 12, 13, 17, 18, 19, 25, 26, 41
Apple Watch Series 4 40mm
Dimensions: 40mm x 34mm x 10.7mm
Display Dimensions: 324x394
Weight: Stainless Steel 39.8g
Weight: Aluminum 30.1g
Apple Watch Series 4 44mm
Dimensions: 44mm x 38mm x 10.7mm
Display Dimensions: 368x448
Weight: Stainless Steel 47.9g
Weight: Aluminum 36.7g
Apple Watch Series 4 40mm
Talk Time: Up to 2 hours
Standby Time: Up to 18 hours
Removable Battery: No
Wireless Charging: Yes
Apple Watch Series 4 44mm
Talk Time: Up to 2 hours
Standby Time: Up to 18 hours
Removable Battery: No
Wireless Charging: Yes
Internal Memory: 16GB
Usable Storage/Internal Memory: N/A
Expandable Memory: N/A