Performance
Operating System
watchOS 5.0
CPU Speed & Type
64-bit Dual-core S4
ROM Size
16GB
Design
Dimensions
44mm x 38mm x 10.7mm - [44MM]
40mm x 34mm x 10.7mm - [40MM]
Case Weight
36.7 grams - [44MM]
30.1 grams - [40MM]
Colors
Space Grey Silver Gold
Display
Size
1.78 INCH - [44MM]
1.57 INCH - [40MM]
Resolution
(448 x 368) - [44MM]
(394 x 324) - [40MM]
Pixel Density
326 PPI
Technology
LTPO OLED Retina
Battery
Capacity
Built-in rechargeable Lithium-ion
Talk Time
Up to 18 hours
Network / Bearer
SIM
Electronic SIM card (Apple e-SIM)
3G
UMTS 850 MHz, 1700 MHz, 1900 MHz
4G
LTE 2 (1900 MHz), 4 (AWS), 5 (850 MHz), 12 (700 MHz), 13 (700c MHz), 17 (700b MHz), 18 (800 MHz), 19 (800 MHz), 25 (1900 MHz), 26 (800 MHz), 41 (TD 2500)
Connectivity
Wi-Fi®
Wi-Fi® 802.11b/g/n 2.4GHz
Bluetooth® Version
Bluetooth® v5.0
Location Technology
GPS, GLONASS, Galileo, and QZSS
Others
Sensors
Accelerometer, Gyroscope, Ambient light sensor, Barometric Altimeter, Electrical Heart Sensor (ECG app), Optical Heart Sensor, Fall Detection, Digital Crown
Inside Box
• Silver Aluminum Case
• Sport Band
• 1m Magnetic Charging Cable
• 5W USB Power Adapter