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Specifications - Apple Watch Series 4
Physical specifications
Dimensions
44 x 38 x 10.7 mm
Weight
48 g
Screen and keys
Screen type
AMOLED
Screen size
1.78 inches
Resolution
448 x 368 pixels
Picture, video and sound
Music player
Yes
FM radio
No
Memory
Storage
16 GB
RAM
1 GB RAM
Network
2G network
Yes
3G network
Yes
4G network
Yes
Connectivity
NFC
Yes
GPS
Yes
Sensors
Accelerometer
Yes
Gyroscope
Yes
Heart rate sensor
Yes
Battery
Standby time
Up to 18 hours
Operating system
Operating system
watchOS 5