Apple Watch SE 3 (40mm) vs Apple Watch SE 3 (44mm) Specs Comparison

Availability

Officially announced
Sep 09, 2025	Sep 09, 2025
Scheduled release
(Official) Sep 19, 2025	(Official) Sep 19, 2025
Prices (MSRP)
$249	$249

Design

Dimensions
1.57 x 1.34 x 0.42 inches 40 x 34 x 10.7 mm	1.73 x 1.50 x 0.42 inches 44 x 38 x 10.7 mm
Weight
0.93 oz / 26.4 g	1.16 oz / 33.0 g
Resistance
Water (up to 50 meters)	Water (up to 50 meters)
Colors
Starlight, Midnight	Starlight, Midnight

Display

Size
1.6-inch, 57.48% screen-to-body	1.8-inch
Type
OLED, 1000 nits	OLED, 1000 nits
Resolution
394x324px, 325 PPI	394x368px, 303 PPI
Features
Pressure-sensitive, Scratch-resistant glass, Ambient light sensor	Pressure-sensitive, Scratch-resistant glass, Ambient light sensor

Hardware

System chip
Apple S10	Apple S10
Processor
Dual-core	Dual-core
GPU
PowerVR	PowerVR
Memory
1GB/64GB	1GB/64GB
Storage expansion
not expandable	not expandable
OS
watchOS (9.x, 8.x, 7.x)	watchOS (9.x, 8.x, 7.x)

Battery

Type
Li - Ion	Li - Ion
Charging
Magnetic charging	Magnetic charging

Connectivity & Features

Bluetooth
5.3	5.3
WLAN
a,b,g,n,ac 802.11 b, g, n	a,b,g,n,ac 802.11 b, g, n
Sensors
Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer, Ambient light sensor	Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer, Ambient light sensor
Location
GPS, Glonass	GPS, Glonass
Other
NFC	NFC

Discover more

Full Specs Apple Watch SE 3 (40mm) Specs

Full Specs Apple Watch SE 3 (44mm) Specs

Multimedia

Speakers
Loudspeaker	Loudspeaker

Cellular

5G Bands
5G Ready	5G Ready
4G (FDD) Bands
1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 25, 26, 66	1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 25, 26, 66
4G (TDD) Bands
39, 40, 41	39, 40, 41
3G Bands
1, 2, 4, 5	1, 2, 4, 5
Data Speed
LTE, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
eSIM	eSIM