Official manufacturer render.
Apple
Apple Watch Series 9 45mm
- Always-On Retina LTPO OLED
- Apple S9 SiP
- 39 g
Available colors
Selected: Midnight
Physical specifications
—
Display size
39 g
Weight
45.0 mm
Height
38.0 mm
Width
10.7 mm
Thickness
—
Aspect ratio
Everyday usability
Estimated from the watch’s size, weight, battery, display, and intended wearing conditions.
Wrist comfort
Moderately noticeableYou will notice its presence on the wrist, though it should stay manageable for daily use.
Sleep comfort
AcceptableOvernight wear should be acceptable for many users, though light sleepers may notice the case.
Battery usability
Data unavailableAvailable battery information is insufficient for a reliable daily-use assessment.
Screen and controls
ExcellentThe large, bright display is easy to read at a glance, with touch input for everyday controls.
Workout usability
ExcellentIts low weight, water resistance, and GPS support make it well suited to running and gym sessions.
See its real size next to another watch.
Compare watchesDisplay
- Display technology
- Always-On Retina LTPO OLED
- Peak brightness
- 2000 nits
- Protection
- Ion-X glass (aluminum) / Sapphire (stainless steel)
Performance
- Chipset
- Apple S9 SiP
- Storage
- 64 GB
- Expandable storage
- No
Battery & charging
- Charging standard
- Apple Watch Magnetic Fast Charger
- Battery type
- Built-in rechargeable lithium-ion
Build & durability
- Frame
- Aluminum or stainless steel
- Front
- Ion-X glass or sapphire crystal
- Ingress protection
- Water resistance 50m; IP6X dust resistance
Connectivity
- Cellular
- LTE (GPS + Cellular models)
- Wi‑Fi
- Wi‑Fi 4 (802.11n)
- Bluetooth
- Bluetooth 5.3
- NFC
- Yes
Release and pricing
- Announced
- September 12, 2023
- Released
- September 22, 2023
Buying guide FAQ
Practical upgrade and buying answers based on published specifications and previous-generation comparisons when available.
Who should buy Apple Watch Series 9 45mm (2023)?
Apple Watch Series 9 45mm (2023) fits buyers who prefer a compact phone footprint. This is an editorial reading of size and published differences, not a personalized recommendation.
Similar size devices
Models and configurations
- Storage
- 64 GB
- Connectivity
- LTE (GPS + Cellular models)
- Colors
- MidnightStarlightSilverPink(PRODUCT)REDGoldGraphite
Official sources
Dimensions and specifications are based on manufacturer-published data. Learn more in our Methodology