Apple Watch Series 3 (38mm) vs Apple Watch Series 10 (46mm) Specs Comparison

Design

Dimensions
1.52 x 1.31 x 0.45 inches 38.6 x 33.3 x 11.4 mm	1.81 x 1.54 x 0.38 inches 46 x 39 x 9.7 mm
Weight
1.50 oz (42.4 g)	1.28 oz (36.4 g)
Materials
Back: Ceramic Frame: Stainless steel	Back: Ceramic Frame: Aluminum
Resistance
Water, Dust	Water, Dust; IP6X
Colors
Space Black, Silver

Display

Size
1.5-inch, 55.12% screen-to-body	1.7-inch
Type
OLED, 1000 nits	OLED, 2000 nits
Resolution
340x272px, 290 PPI	496x416px, 383 PPI
Protection
Sapphire
Features
Pressure-sensitive, Scratch-resistant glass

Hardware

System chip
Apple S3	Apple S10
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	327 mAh, Li - Ion
Charging
Qi wireless charging	Qi wireless charging

Camera

Connectivity & Features

Bluetooth
4.2	5.3
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, Thermometer, Barometer, ECG, Blood Oxygen
Location
A-GPS, Glonass	A-GPS, Glonass, Galileo, BeiDou
Other
NFC	NFC, Ultra Wideband (UWB)

Multimedia

Headphones
No 3.5mm jack
Speakers
Loudspeaker	Loudspeaker

Cellular

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

Alternative variants

GPS Only

Weight	1.28 oz (36.4 g)

With Titanium frame

Weight	1.47 oz (41.7 g)
Materials	Frame: Titanium

Links

Full specifications
Apple Watch Series 3 (38mm) Specs	Apple Watch Series 10 (46mm) Specs
PhoneArena Review
Apple Watch Series 3 (38mm) Review