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Apple Apple Watch Series 10 42mm

42 mm36 mm9.7 mm
Released
2024-09-20endoflife.date, retrieved 2026-09-13
Price
RRP not on file

The Apple Watch Series 10 42mm went on sale on 20 September 2024. It has a weight of 30 g, the S10 SiP chip and 64 GB of storage to start. Apple claims up to 18 hours per charge. Apple publishes no end date for its security updates. Every figure in the Apple Watch Series 10 42mm specifications below links the page it came from and the date it was read.

Battery life (maker's claim)

18h

Official

Case size

42mm

Official

Weight (case only)

30g

Official

Water rating

Water resistance 50m (swimproof)

Official

Works with

Works with an iPhone only.

Apple’s own words: “iPhone Xs or later with iOS 18 or later and iPhone SE (2nd generation or later)”Apple Support — Apple Watch Series 10 Tech Specs, retrieved 2026-09-13

UK networks whose own pages list eSIM support for the cellular model: EE, Vodafone, O2, Three.Vodafone UK — eSIM-compatible devices, retrieved 2026-09-13

Specifications

Every figure carries its source, linked and dated.

Body

Dimensions
42 x 36 x 9.7 mmOfficial
Case size
42mmOfficial
Case shape
rectangularOfficial
Weight (case only)
30gOfficial
Case material
AluminiumOfficial
Water rating
Water resistance 50m (swimproof)Official

Display

Display type
Always-On Retina LTPO3 displayOfficial
Display area
989mm²Official
Resolution
374 x 446Official
Peak brightness
2000nitsOfficial
Always-on display
YesOfficial

Platform

Operating system
watchOSOfficial
Chip
S10 SiPOfficial
Storage
64GBOfficial

Battery

Battery life (maker's claim)
18hOfficial
Charge to 80%
30minOfficial
Charging
Fast-charge capable, Apple Watch Magnetic Fast Charger to USB-C CableOfficial

Health

Sensors
Electrical heart sensor, third-generation optical heart sensor, temperature sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensor, depth gauge, water temperature sensorOfficial
ECG
YesOfficial
Skin temperature
YesOfficial
GPS
L1 GPS, GNSS, Galileo and BeiDouOfficial

Connectivity

Cellular model
YesOfficial
UK networks with eSIM
EE, Vodafone, O2, Three3rd party
Wi-Fi
Wi-Fi 4 (802.11n)Official
Bluetooth
5.3Official
NFC payments
YesOfficial

Compatibility

Works with
iPhone Xs or later with iOS 18 or later and iPhone SE (2nd generation or later)Official
Compatibility
iPhone onlyOfficial
7 attributes without a sourced figure yet

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

What it actually costs

New against used, and what the same shop pays for the watch on your wrist.

Used, Grade A

£230

CeX, read 2026-10-04 · repriced 2026-06-03

Used, Grade B

£170

CeX, read 2026-10-04 · repriced 2026-07-14

Used, Grade C

£130

CeX, read 2026-10-04 · repriced 2026-07-14

Trade in yours, Grade A

£147cash£170voucher

CeX, read 2026-10-04 · 16% more as store credit

Prices move; these were read on 2026-10-04. Used and trade-in figures are CeX's own, for an unlocked handset at this device's base storage. We hold no stock and take no commission.

Software support

Feature updates until
Not published by the maker
Security updates until
Not published by the maker

Basis: our inference from history

Apple's watchOS 27 page (read 2026-09-22) lists the Apple Watch Series 10 among the models watchOS 27 supports; watchOS 27 was released on 14 September 2026. Apple publishes no forward date for watchOS or security support.

Apple UK — watchOS 27 compatible models, retrieved 2026-09-22

Comparisons

The pairs a buyer of this watch would weigh, row by row with a verdict on each. Any other watch in the catalogue is a chooser away.

Against its own line

Against other Apple watches