Ask Siri With the Apple Watch Series 3 you can ask Siri to set reminders, send an invitation, or give you directions, and Siri will talk back. This means you can get the info you need without having the check your screen – great for directions on the go, or quickly checking the weather forecast. Customise your Watch to suit your personality with WatchOS 4. Choose the watch face you want, whether that's important information at a glance, your favourite photo, or apps that launch with just a tap. Monitor your workouts Workouts are easier than ever to track thanks to the built-in GPS and altimeter, so you get a clear summary of your speed, distance, climb, and route. Track indoor and outdoor workouts like running, cycling, and even high-intensity interval training with accurate and detailed metrics. The water resistant design means you can track your lengths in the pool or distance in open water, and see at a glance how many calories you've burnt. When you've finished, sound vibrations eject water from the speaker. Stay motivated It's easy to find the motivation you need to get moving every day. Three simple activity rings let you track your progress throughout the day, with reminders to move, exercise, and stand. Like having your own personal trainer, Smart Coaching encourages you to hit your goal, and gives you suggestions to on how to close your rings. You can even share your progress with friends and family, and cheer each other on. Heart rate monitor With the Heart Rate app you get a clear picture of your heart health. By measuring your heart rate throughout the day, you can see detailed stats on your resting, walking, and recovery phases. You'll also be notified if your heart rate rises above a set threshold when you've been inactive for 10 minutes.