Apple Watch Series 3 (38mm) vs Apple Watch Series 3 (42mm) Specs Comparison

Design

Dimensions
1.52 x 1.31 x 0.45 inches 38.6 x 33.3 x 11.4 mm	1.67 x 1.43 x 0.45 inches 42.5 x 36.4 x 11.4 mm
Weight
1.50 oz (42.4 g)	1.86 oz (52.8 g)
Materials
Back: Ceramic Frame: Stainless steel	Back: Ceramic Frame: Stainless steel
Resistance
Water, Dust	Water, Dust
Colors
Space Black, Silver	Space Black, Silver

Display

Size
1.5-inch, 55.12% screen-to-body	1.6-inch, 55.61% screen-to-body
Type
OLED, 1000 nits	OLED, 1000 nits
Resolution
340x272px, 290 PPI	390x312px, 303 PPI
Protection
Sapphire	Sapphire
Features
Pressure-sensitive, Scratch-resistant glass	Pressure-sensitive, Scratch-resistant glass

Hardware

System chip
Apple S3	Apple S3
Processor
Dual-core	Dual-core
GPU
PowerVR	PowerVR
Memory
768GB/16GB	768GB/16GB
OS
watchOS (8.x, 7.x, 6.1, 6.x, 5.1, 5, 4.x)	watchOS (8.x, 7.x, 6.1, 6.x, 5.1, 5, 4.x)

Battery

Type
279 mAh	341 mAh
Charging
Qi wireless charging	Qi wireless charging

Camera

Connectivity & Features

Bluetooth
4.2	4.2
WLAN
b,g,n 802.11 b, g, n	b,g,n 802.11 b, g, n
Sensors
Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer	Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer
Location
A-GPS, Glonass	A-GPS, Glonass
Other
NFC	NFC

Multimedia

Headphones
No 3.5mm jack	No 3.5mm jack
Speakers
Loudspeaker	Loudspeaker

Cellular

4G (FDD) Bands
1, 3, 5, 7, 8, 18, 19, 20, 26	1, 3, 5, 7, 8, 18, 19, 20, 26
3G Bands
1, 5, 8	1, 5, 8
Data Speed
LTE, HSDPA+ (4G) 42.2 Mbit/s	LTE, HSDPA+ (4G) 42.2 Mbit/s
SIM type
eSIM	eSIM

Links

Full specifications
Apple Watch Series 3 (38mm) Specs	Apple Watch Series 3 (42mm) Specs
PhoneArena Review
Apple Watch Series 3 (38mm) Review	Apple Watch Series 3 (42mm) Review