Apple Watch devices that require replacement parts are not included in the Apple Certified Refurbished Program. ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE) and can generate an ECG similar to a single-lead electrocardiogram. Intended for use by people 22 years old and over. Whatever workout you have in mind, it's sure to be on your wrist and ready with just a tap. See all the metrics you need to keep motivated in customizable views. And durability that makes it easy to give it all you've got, without sweating how your Apple Watch will hold up.

The temperature sensing feature is not a medical device and not intended for use in medical diagnosis, treatment or for any other medicalpurpose.Case and strap combinations can be made within collections (AppleWatch, AppleWatchNike and AppleWatchHermès) only.

Apple Watch Series 9 has a water resistance rating of 50 meters under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. However, Apple Watch Series 9 should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. Water resistance is not a permanent condition and can diminish over time. For additional information see support.apple.com/HT205000. Irregular rhythm notification requires the latest version of watchOS and iOS. It is not intended for use by people under 22 years old or those who have been previously diagnosed with atrial fibrillation (AFib). Apple Watch Ultra 2 has a water resistance rating of 100 metres under ISO standard 22810. It may be used for recreational scuba diving (with compatible third-party app from the App Store) to 40 metres and high-speed water sports. Apple Watch Ultra 2 should not be used for diving below 40 metres. Water resistance is not a permanent condition and can diminish over time. For additional information, see support.apple.com/en-ca/HT205000.Apple Fitness+ requires iPhone8 or later with iOS16.1 or later or Apple Watch Series3 or later with watchOS7.2 or later paired with iPhone 6s or later with iOS 14.3 or later. The international emergency calling feature requires an Apple Watch Ultra 2 (Cellular), Apple Watch Series 9 (GPS + Cellular), or Apple Watch SE (GPS + Cellular) model. For a list of supported countries and regions, see apple.com/watchos/feature-availability. Apple Watch keeps you connected to the people and things that you care about, right from your wrist. And with a cellular plan, you can do it all without your iPhone nearby. All Apple Certified Refurbished Products are covered by a one-year limited warranty. For more coverage, you have the option of purchasing AppleCare Plan with your Apple Certified Refurbished Product. The AppleCare Plan provides up to three years of world-class support for Mac, and up to two years of world-class support for iPad, iPod, iPhone, Apple Watch, Apple TV and HomePod. Fast charging is compatible with Apple Watch Series 7 or later, including all Ultra models. It is not compatible with any Apple Watch SE model.