Apple Watch Series 9 [GPS + Cellular 45mm]Smartwatch with (PRODUCT)RED Aluminum Case with (PRODUCT)RED Sport Band S/M. Fitness Tracker,Blood Oxygen & ECG Apps,Always-On Retina Display,Water Resistant

From the manufacturer

WHY APPLE WATCH SERIES 9 — Your essential companion for a healthy life is now even more powerful. The S9 chip enables a super-bright 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 aluminium Apple Watch Series 9 paired with the latest Sport Loop is carbon neutral.
CELLULAR CONNECTIVITY—Send a text, make a call, and stream music without your iPhone nearby.
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 well-being 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.