Apple
Apple MRJ23LL/A Watch Series 9 GPS + Cellular 41mm
The S9 chip, Double Tap gesture, and independent cellular connectivity make the Series 9 the most capable Apple Watch yet for health monitoring, safety response, and staying connected without your iPhone.
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Overview
Key Features
WHY APPLE WATCH SERIES 9 — Your essential companion for a healthy life is now even more powerful. The S9 chip enables a superbright display and a magical new way to quickly and easily interact with your Apple Watch without touching the screen. Advanced health, safety, and activity features provide powerful insights and help when you need it. And redesigned apps in watchOS give you more information at a glance.
CARBON NEUTRAL — An aluminum Apple Watch Series 9 paired with the latest Sport Loop is carbon neutral. Learn more about Apple’s commitment to the environment at apple.com/2030.
CELLULAR CONNECTIVITY — Send a text, make a call, and stream music without your iPhone nearby. Use Family Setup to manage Apple Watch for family members who don’t yet have their own iPhone, so everyone can stay connected, active, healthy, and safe.
ADVANCED HEALTH FEATURES — Keep an eye on your blood oxygen. Take an ECG anytime. Get notifications if you have an irregular heart rhythm. See how much time you spent in REM, Core, or Deep sleep with sleep stages. Temperature sensing provides insights into overall wellbeing and cycle tracking. And take note of your state of mind to help build emotional awareness and resilience.
A POWERFUL FITNESS PARTNER — The Workout app gives you a range of ways to train plus advanced metrics for more insights about your workout performance. And Apple Watch comes with three months of Apple Fitness+ free.
INNOVATIVE SAFETY FEATURES — Fall Detection and Crash Detection can connect you with emergency services in the event of a hard fall or a severe car crash. And Emergency SOS lets you call for help with the press of a button.
SIMPLY COMPATIBLE — It works seamlessly with your Apple devices and services. Unlock your Mac automatically. Get approximate distance and directions to your iPhone with Precision Finding on supported iPhone models. Pay and send money with Apple Pay. Apple Watch requires iPhone XS or later with the latest iOS version.
EASILY CUSTOMIZABLE — With watch bands in a range of styles, materials, and colors and fully customizable watch faces, you can change your watch to fit your mood or the moment.
INCREDIBLE DURABILITY — Tougher than tough. It’s crack resistant, IP6X-certified dust resistant, and swimproof with 50m water resistance.
LEGAL DISCLAIMERS — This is a summary of the main product features. See below to learn more.
Specifications
Case Size
41mm
Connectivity
GPS + Cellular
Chip
Apple S9
Display
Always-On Retina (up to 2000 nits)
Health Features
Blood Oxygen, ECG, Heart Rate, Temperature Sensing, Sleep Stages
Safety Features
Fall Detection, Crash Detection, Emergency SOS
Water Resistance
50m swimproof, IP6X dust resistant
Compatibility
iPhone XS or later
Band
Storm Blue Sport Band (S/M)
Gestures
Double Tap
Frequently Asked Questions
What does the S9 chip actually improve over the previous generation?
The S9 is Apple's latest wearable SiP with a 4-core CPU and enhanced neural engine. It enables on-device Siri processing (no internet required for many requests), the new Double Tap gesture, and powers the always-on display at up to 2000 nits peak brightness — double the Series 8's maximum.
How does Double Tap work in practice?
Double Tap detects an index-finger and thumb pinch gesture twice, using the accelerometer and heart rate sensor in combination. It can answer calls, stop timers, dismiss notifications, and control playback — all without touching the screen or pressing a button, useful when your other hand is occupied.
Can the Series 9 operate independently without an iPhone nearby?
Yes — with GPS + Cellular active on a paired carrier plan, the Series 9 makes calls, sends messages, streams music, and processes Siri requests independently. You need a carrier plan paired to the watch; the hardware supports it but cellular service is not included.
What health sensors are in the 41mm Series 9?
The Series 9 includes an optical heart rate sensor, electrical heart sensor for ECG readings, blood oxygen optical sensor, and body temperature sensor. Together these enable ECG, irregular heart rhythm notifications, blood oxygen spot checks, sleep stage detection, and cycle tracking with temperature insights.
How waterproof and dust resistant is this watch?
The Series 9 is IP6X dust certified and swimproof to 50 meters — safe for pool swimming, ocean use, and showering. It is not rated for scuba diving or high-velocity water sports such as water skiing.
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