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Apple Watch Series 9 · Apple official supplied product photograph; complete original canvas/background and native alpha retained.

Apple Watch Series 9
Photo 1 of 30

Apple Watch Series 9 · Apple official supplied product photograph; complete original canvas/background and native alpha retained.

Apple · Apple Watch

Watch Series 9

Released September 2023

The Apple Watch Series 9 is Apple's 2023 everyday smartwatch, in 41 mm and 45 mm aluminium or stainless steel cases, with the S9 chip, double tap and a 2,000-nit display, suited to iPhone owners comparing it with newer models before upgrading.

Model history · 9 models, 2015–2023
  1. 2015Watch (1st generation)Compare
  2. 2016Watch Series 2Compare
  3. 2017Watch Series 3Compare
  4. 2018Watch Series 4Compare
  5. 2019Watch Series 5Compare
  6. 2020Watch Series 6Compare
  7. 2021Watch Series 7Compare
  8. 2022Watch Series 8Compare
  9. 2023Watch Series 9
Type
Smart and sports
Sizes
41, 45 mm
Movement
–
Power reserve
–
Display
LTPO OLED
Battery
18 h
Water
50 m
GPS
Single-band
Weight
31.9 g

What reviewers say

Reviewers agree it is a refined, very good smartwatch, with the faster S9 chip enabling a genuinely useful double-tap gesture, on-device Siri and a brighter screen. The common criticisms are the unchanged design and 18-hour battery life and Precision Finding that needs an iPhone 15; TechRadar noted watchOS 10 brings most features to older watches.

From techradar.com, tomsguide.com and theverge.com

Specifications

Report a wrong or missing spec

Display

Case sizes
41 mm or 45 mm
Panel
LTPO OLED
Peak brightness
2,000 nits
Always-on display
Yes
Display detail
Always-On Retina LTPO OLED display, edge to edge; 326 ppi; up to 2,000 nits maximum and 1 nit minimum brightness
Screen protection
Ion-X front glass (aluminium cases); sapphire front crystal (stainless steel cases)

Health and fitness

ECG
Yes
Blood oxygen
Yes
Skin temperature
Yes
Sleep apnoea alerts
Yes
High blood pressure alerts
Yes
Body composition
No
Fall detection
Yes
Crash detection
Yes
GPS
Single-band
Water resistance
50 m
Sensors
Electrical heart sensor; third-generation optical heart sensor; temperature sensing; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor
Health features
ECG app; Blood Oxygen app; sleep apnoea notifications and hypertension notifications (added in later watchOS updates); irregular rhythm notifications; high and low heart rate notifications; sleep stages; Cycle Tracking with retrospective ovulation estimates; Medications; Mindfulness; Noise
Fitness features
Custom interval workouts; Heart Rate Zones; Race Route; stride length, ground contact time and vertical oscillation; automatic track detection; multisport workouts; Backtrack; pool and open-water swimming with SWOLF and automatic stroke detection; cycling Functional Threshold Power, power zones and cadence with Bluetooth accessories; GymKit
Safety features
Emergency SOS; international emergency calling; Crash Detection; Fall Detection

Battery and connections

Battery life (maker's claim)
Up to 18 hours
In low-power mode
Up to 36 hours
Mobile data option
Yes
Works with
iPhone
Chip
S9
Storage
64 GB
Battery life detail
Built-in rechargeable lithium-ion battery
Charging
Fast charging to 80% in about 45 minutes
Connectivity
L1 GPS, GNSS, Galileo and BeiDou; 4G LTE and UMTS (GPS + Cellular models); Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband chip with Precision Finding for iPhone 15 and later; Apple Pay

Design

Weight (lightest version)
31.9 g
Software
watchOS
Case materials
Aluminium or stainless steel case; water resistant to 50 m (swimproof); IP6X dust resistant
Size
41mm is 41 x 35 x 10.7 mm, 31.9 g (aluminium, GPS), 32.1 g (aluminium, GPS + Cellular) or 42.3 g (stainless steel); 45mm is 45 x 38 x 10.7 mm, 38.7 g (aluminium, GPS), 39.0 g (aluminium, GPS + Cellular) or 51.5 g (stainless steel); lightest is the 41mm aluminium GPS
Bands
Fits 130–200 mm wrists (41mm) or 140–245 mm wrists (45mm)
Colours
Aluminium in Pink, Midnight, Starlight, Silver and (PRODUCT)RED; stainless steel in Gold, Silver and Graphite
In the box
Apple Watch Series 9, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)

Pros and cons

Pros

  • Up to 2,000 nits, double the Series 8, with a 1-nit minimum
  • ECG, blood oxygen, sleep apnoea and hypertension notifications, all available in the UK
  • Double tap gesture and on-device Siri, enabled by the S9 chip

Cons

  • Up to 18 hours of normal use, or 36 hours in Low Power Mode
  • Slower charging than Series 10, at up to 80% in about 45 minutes
  • 10.7 mm thick, against 9.7 mm for Series 10

Closest rivals

Model
TypeSizesMovementPower reserveDisplayBatteryWaterGPSWeightReleased
AppleWatch Series 8
Smart and sports41, 45 mm––LTPO OLED18 h50 mSingle-band31.9 gSept 2022
AppleWatch SE (2nd generation)
Smart and sports40, 44 mm––LTPO OLED18 h50 mSingle-band26.4 gSept 2022
AppleWatch Series 10
Smart and sports42, 46 mm––LTPO OLED18 h50 mSingle-band29.3 gSept 2024

Previous model: Watch Series 8. Newer model: Watch Series 10.

Sources

  1. support.apple.com/en-gb/111833
  2. apple.com/uk/newsroom/2023/09/apple-introduces-the-advanced-new-apple-watch-ser…
  3. apple.com/uk/watchos/feature-availability
  4. support.apple.com/en-gb/120358
  5. support.apple.com/en-gb/120031
  6. apple.com/uk/newsroom/2025/09/apple-debuts-apple-watch-series-11-featuring-grou…

Photo: Apple official supplied product photograph; complete original canvas/background and native alpha retained.

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