Apple Watch Series 8 Aluminum 45mm vs Apple Watch Ultra

Apple Watch Series 8 Aluminum 45mm

Apple Watch Ultra

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100

HSDPA 850, 900, 1700(AWS), 1900, 2100 - global version, China; 850, 1700(AWS), 1900, 2100 - USA, LATAM, Canada
4G network

LTE frequency band 1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66

LTE frequency band 1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - global version, China, Hong Kong; 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps

Design
Build

Glass front, ceramic/sapphire crystal back, aluminum frame

Sapphire crystal front, ceramic/sapphire crystal back, titanium frame
SIM

eSIM

eSIM
Height

45 mm

49 mm
Width

38 mm

44 mm
Thickness

10.7 mm

14.4 mm
Weight

38.8 g

61.3 g
Waterproof

IP6X (50m)

IP6X (100m)
Dust proof

IP6X

IP6X
MIL-STD-810H

-

Yes
Colors

Midnight, Red, Silver, Starlight

Titanium

Features
Sensors

Accelerometer, always-on altimeter, barometer, compass, gyroscope, heart rate, SpO2, temperature (body), VO2max

Accelerometer, always-on altimeter, barometer, compass, gyro, heart rate, SpO2, temperature (body), temperature(water), VO2max