Apple Watch Series 2 42mm vs Apple Watch Series 3 Aluminum

Apple Watch Series 2 42mm

Apple Watch Series 3 Aluminum

Network
2G network

N/A

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

No

Yes
EDGE

No

Yes

Design
Build

Stainless Steel/Ceramic back

Aluminum/Ceramic back
SIM

No

Electronic SIM card (Apple e-SIM)
Height

42.5 mm

42.5 mm
Width

36.4 mm

36.4 mm
Thickness

11.4 mm

11.4 mm
Weight

52.4 g

34.9 g
Waterproof

50m

50m
Colors

Sport band: silver case/white, black case/black; Leather band: silver case/blue, brown, orange; Stainless Steel band: silver case/silver, black case/black

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