Apple Watch Series 9
The gold standard smartwatch, refined with Double Tap and a blindingly bright display.
$399.00 USD
Discontinued
Image: Apple
Overview
The Apple Watch Series 9 features the S9 SiP chip with 5.6 billion transistors, the innovative Double Tap gesture, a 2,000-nit always-on display, and comprehensive health sensors including ECG and temperature sensing. Discontinued by Apple in September 2024 when the Series 10 launched.
Key Features
- S9 SiP with 4-core Neural Engine
- Double Tap gesture control
- 2,000-nit always-on Retina display
- On-device Siri processing
- ECG and temperature sensing
- Ultra Wideband 2 chip
- 64GB storage
- IP6X dust and WR50 water resistance
Description
The Apple Watch Series 9 launched in September 2023 as Apple's flagship smartwatch, featuring the S9 SiP with a 30% faster GPU and twice-as-fast Neural Engine compared to the S8. Its standout feature is Double Tap, a gesture that lets users control the watch by tapping their index finger and thumb together. The 2,000-nit display doubled the brightness of its predecessor, and on-device Siri processing brought faster, more private voice commands. The blood oxygen sensor was disabled for US buyers from January 2024 to August 2025 due to the Masimo patent dispute, and now operates via an iPhone-based workaround. Discontinued when the Series 10 arrived in September 2024.
Specifications
Battery
| Battery Life | Up to 18 hours |
|---|---|
| Low Power Mode | Up to 36 hours |
| Fast Charging | 80% in ~45 minutes |
Connectivity
| Bluetooth | 5.3 |
|---|---|
| Wi-Fi | 802.11n |
| Ultra Wideband | Second generation |
| NFC | Apple Pay |
Display
| Display Type | Always-On Retina LTPO OLED |
|---|---|
| Peak Brightness | 2,000 nits |
| Min Brightness | 1 nit |
| Resolution | 326 PPI |
Physical
| Case Sizes | 41mm, 45mm |
|---|---|
| Weight (45mm Aluminum GPS) | 38.7 g |
| Weight (45mm Stainless Steel) | 51.5 g |
| Water Resistance | WR50 |
| Dust Resistance | IP6X |
| Case Materials | Aluminum, Stainless Steel |
| Front Crystal | Ion-X (Aluminum), Sapphire (Steel) |
Sensors
| Heart Rate | Third-gen optical sensor |
|---|---|
| ECG | Electrical heart sensor |
| Temperature | Yes (cycle tracking) |
| Blood Oxygen | Via iPhone workaround (US) |
| Crash Detection | Yes |
| Fall Detection | Yes |
Software
| Chip | S9 SiP (5.6B transistors) |
|---|---|
| Storage | 64 GB |
| OS | watchOS 11 |