Apple Watch Sport 38mm vs Apple Watch Sport Series 3

Apple Watch Sport 38mm

Apple Watch Sport Series 3

Network
2G network

GSM 850, 900, 1800, 1900
3G network

-

HSDPA 850, 900, 2100, 800 - Europe, Australia; HSDPA 850, 1700(AWS), 1900, 800 - USA, LATAM, Canada; HSDPA 2100 - China
4G network

-

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 18(800), 19(800), 20(800), 26(850) - Europe, Australia; LTE frequency band 2(1900), 4(1700/2100), 5(850), 12(700), 13(700), 17(700), 18(800), 19(800), 25(1900), 26(850), 41(2500) - USA, LATAM, Canada; LTE frequency band 1(2100), 3(1800), 39(1900), 40(2300), 41(2500) - China
HSPA speed

-

HSPA
LTE speed

-

LTE
GPRS

Yes
EDGE

Yes

Design
Build

Aluminum

Aluminum/Ceramic back
SIM

No

Electronic SIM card (Apple e-SIM)
Height

38.6 mm

42.5 mm
Width

33.3 mm

36.4 mm
Thickness

10.5 mm

11.4 mm
Weight

62 g

34.9 g
Waterproof

-

50m
Colors

Blue; Gold/White; Gray/Black; Rose Gold/Lavender, Orange, Silver/White, Stone

Gold, Silver, Space Gray

Features
Messaging SMS

SMS(threaded view)

SMS(threaded view)
Messaging Email

Email

Email
Messaging IM

IM

IM
Messaging Push Mail

Push Mail

Push Mail
Java

No

No
Sensors

Accelerometer, gyro, heart rate

Accelerometer, barometer, gyro, heart rate