Apple Watch Series 3 (38mm) vs Apple Watch Series 9 (41mm) Specs Comparison

Design

Dimensions
1.52 x 1.31 x 0.45 inches 38.6 x 33.3 x 11.4 mm	1.61 x 1.38 x 0.42 inches 41 x 35 x 10.7 mm
Weight
1.50 oz (42.4 g)	1.49 oz (42.3 g)
Materials
Back: Ceramic Frame: Stainless steel	Back: Ceramic Frame: Aluminum
Resistance
Water, Dust	Water, Dust; IP6X
Colors
Space Black, Silver	Midnight, Starlight, Green, Blue, Red

Display

Size
1.5-inch	1.7-inch
Resolution
340x272px, 290 PPI	430x352px, 329 PPI
Technology
OLED	OLED
Screen-to-body
55.12 %	63.01 %
Peak brightness
1000 cd/m2 (nit)	1000 cd/m2 (nit)
Features
Pressure-sensitive, Scratch-resistant glass (Sapphire)

Hardware

System chip
Apple S3	Apple S9
Processor
Dual-core	Dual-core
GPU
PowerVR	PowerVR
Memory
768GB/16GB	1GB/64GB
Storage expansion
	not expandable
OS
watchOS (8.x, 7.x, 6.1, 6.x, 5.1, 5, 4.x)	watchOS (10.x)

Battery

Type
279 mAh	282 mAh, Li - Ion
Charging
Qi wireless charging	Qi wireless charging

Camera

Connectivity & Features

Bluetooth
4.2	Yes
WLAN
802.11 b,g,n	802.11 b,g,n
Location
A-GPS, Glonass	A-GPS, Glonass, Galileo, BeiDou, QZSS
Sensors
Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer	Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Thermometer, Barometer, ECG, Blood Oxygen
Other
NFC	NFC, Ultra Wideband (UWB)

Multimedia

Headphones
No 3.5mm jack
Speakers
Loudspeaker	Loudspeaker
Additional microphone(s)
	Yes

Cellular

4G (FDD)
Bands 1, 3, 5, 7, 8, 18, 19, 20, 26	Bands 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 25, 26, 28, 66(AWS-3)
4G (TDD)
	Bands 39, 40, 41
3G
Bands 1, 5, 8	Bands 1, 2, 4, 5
Data Speed
LTE, HSDPA+ (4G) 42.2 Mbit/s	LTE, HSDPA+ (4G) 42.2 Mbit/s
SIM type
eSIM	eSIM

Availability

Officially announced
	Sep 12, 2023

Links

Full specifications
Apple Watch Series 3 (38mm) Specs	Apple Watch Series 9 (41mm) Specs
PhoneArena Review
Apple Watch Series 3 (38mm) Review	Apple Watch Series 9 (41mm) Review