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MobileIQ

Head to head

Apple Apple Watch SE 2 40mmvsApple Apple Watch SE 2 44mm

Released
2022-09-16endoflife.date, retrieved 2026-09-13
Security updates until
Not published by the makerApple UK — watchOS 27 compatible models, retrieved 2026-09-22
Released
2022-09-16endoflife.date, retrieved 2026-09-13
Security updates until
Not published by the makerApple UK — watchOS 27 compatible models, retrieved 2026-09-22

0 wins for Apple Watch SE 2 40mm0 wins for Apple Watch SE 2 44mm1 gap borderline0 differences you won’t notice

Verdict: nothing you’d notice between them

On the makers’ published figures, neither the Apple Watch SE 2 40mm nor the Apple Watch SE 2 44mm wins a row by a gap you would notice. One gap is borderline, a difference most people would not notice: weight (case only) (26.4 g against 32.9 g) for the Apple Watch SE 2 40mm. Both state the same peak brightness, battery life (maker's claim) and charge to 80%. The other 23 rows have no threshold or no direction to judge by, so nobody wins them.

True to scale

Apple Watch SE 2 40mm · 40 × 34 mmApple Watch SE 2 44mm · 44 × 38 mm

Case outlines from each maker’s published dimensions, drawn to scale. Corner rounding is our drawing convention, not a measurement.

Specifications

A win is marked only where the figures can be ranked and the gap is one you could notice on the wrist. A row the site has no threshold for says whether the two differ, and that it is not ranking them. = marks the same figure on both, ≠ not ranked a difference with no ranking. Every figure carries its source.

Body

SpecificationApple Watch SE 2 40mmApple Watch SE 2 44mm
DimensionsDiffers, but not ranked.
40 x 34 x 10.7 mmOfficial
44 x 38 x 10.7 mmOfficial
Case size
Case shapeSame.
rectangularOfficial
rectangularOfficial
Weight (case only)

Marginal — most people won’t notice.

Case materialSame.
AluminiumOfficial
AluminiumOfficial
Water ratingSame.
Water resistance 50m (swimproof)Official
Water resistance 50m (swimproof)Official

Display

SpecificationApple Watch SE 2 40mmApple Watch SE 2 44mm
Display typeSame.
Retina LTPO OLED displayOfficial
Retina LTPO OLED displayOfficial
Display areaDiffers, but not ranked.
759mm²Official
977mm²Official
ResolutionDiffers, but not ranked.
324 x 394Official
368 x 448Official
Peak brightnessSame.
1000nitsOfficial
1000nitsOfficial
Always-on displaySame.

Platform

SpecificationApple Watch SE 2 40mmApple Watch SE 2 44mm
Operating systemSame.
watchOSOfficial
watchOSOfficial
ChipSame.
S8 SiPOfficial
S8 SiPOfficial
StorageSame.

Battery

SpecificationApple Watch SE 2 40mmApple Watch SE 2 44mm
Battery life (maker's claim)Same.
Charge to 80%Same.
ChargingSame.
Apple Watch Magnetic Charger to USB-C CableOfficial
Apple Watch Magnetic Charger to USB-C CableOfficial

Health

SpecificationApple Watch SE 2 40mmApple Watch SE 2 44mm
SensorsSame.
Second-generation optical heart sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensorOfficial
Second-generation optical heart sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensorOfficial
ECGSame.
GPSSame.
L1 GPS, GNSS, Galileo and QZSSOfficial
L1 GPS, GNSS, Galileo and QZSSOfficial

Connectivity

SpecificationApple Watch SE 2 40mmApple Watch SE 2 44mm
Cellular modelSame.
UK networks with eSIMSame.
EE, Vodafone, O2, Three3rd party
EE, Vodafone, O2, Three3rd party
Wi-FiSame.
Wi-Fi 4 (802.11n)Official
Wi-Fi 4 (802.11n)Official
BluetoothSame.
NFC paymentsSame.

Compatibility

SpecificationApple Watch SE 2 40mmApple Watch SE 2 44mm
Works withSame.
iPhone Xs or later with iOS 18 or laterOfficial
iPhone Xs or later with iOS 18 or laterOfficial
CompatibilitySame.
iPhone onlyOfficial
iPhone onlyOfficial
8 attributes neither watch has a sourced figure for

Strap width · Display size · RAM · Battery capacity · Blood oxygen · Skin temperature · Blood pressure · Cellular model price. Rows appear as sources are cited — a gap in our data, not a statement about either watch.

The pairs a buyer of either watch would also weigh. Any two watches in the catalogue can be compared from the chooser.