Updated : Aug 14, 2025, 9:17 AM

Apple Watch Series 9 (45mm)

Full Specifications

Released · Sep 22, 2023

9.0

Read Apple Watch Series 9 (45mm) Review

I want it 1 user

I have it 0 users

I had it 0 users

Deals

$349 $80 off

Popular Comparisons

The Apple Watch Series 9 (45mm) is most commonly compared with these phones:

Availability
Officially announced	Sep 12, 2023

Design
Dimensions	1.61 x 1.38 x 0.42 inches 41 x 35 x 10.7 mm
Weight	1.82 oz (51.5 g)
Materials	Back: Ceramic Frame: Aluminum
Resistance	Water, Dust; IP6X
Colors	Midnight, Starlight, Green, Blue, Red

Display
Size	1.7-inch, 63.01% screen-to-body
Type	OLED, 1000 nits
Resolution	430x352px, 329 PPI

Hardware
System chip	Apple S9
Processor	Dual-core
GPU	PowerVR
Memory	1GB/64GB
Storage expansion	not expandable
OS	watchOS (10.x)

Battery
Type	308 mAh, Li - Ion
Charging	Qi wireless charging

Connectivity & Features
Bluetooth	Yes
WLAN	b,g,n 802.11 b, g, n
Sensors	Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Thermometer, Barometer, ECG, Blood Oxygen
Location	A-GPS, Glonass, Galileo, BeiDou, QZSS
Other	NFC, Ultra Wideband (UWB)

Multimedia
Speakers	Loudspeaker
Additional microphone(s)	Yes

Cellular
4G (FDD) Bands	1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 25, 26, 28, 66
4G (TDD) Bands	39, 40, 41
3G Bands	1, 2, 4, 5
Data Speed	LTE, HSDPA+ (4G) 42.2 Mbit/s
SIM type	eSIM

Despite our efforts to provide full and correct Apple Watch Series 9 (45mm) specifications, there is always a possibility of admitting a mistake. If you see any wrong or incomplete data, please

LET US KNOW.

If you are interested in using our specs commercially, check out our Phone specs database licensing page.

Related News

Apple Watch owners in the US are getting back as early as today a popular health feature that was taken away last year from the Apple Watch Series 9, Series 10, and Apple Watch Ultra 2. Bloomberg’s Mark Gurman reports that blood oxygen tracking will ...

Blood oxygen monitoring returns to Apple Watch in the US — but with a twist

What could possibly be better than a 2024-released Apple Watch Series 10 (in your size, color, and connectivity variant of choice) at a $100 discount? Well, how about an older and only slightly humbler Apple Watch Series 9 marked down by a staggering...

Overwhelming new Best Buy deal drops this Apple Watch Series 9 model with LTE to an unrivaled price

A few days ago, we told you about a sweet offer at Walmart that let you grab a brand-new Apple Watch Series 9 at a massive $150 discount. And while this promo is sadly a thing of the past now, you can still save big time on Apple's former flagship — ...

Hurry, less than 24 hours left to grab the Apple Watch Series 9 for $120 off at Best Buy

Released in the fall of 2023 and eclipsed in a number of key ways by its 2024 sequel, the Apple Watch Series 9 is obviously not the all-around best smartwatch available in 2025... unless you can find it at the right price. $279 may well be the sweet ...