Apple Watch connects to your iPhone via Bluetooth 4.2 and displays notifications, apps, and more on its 1.5" display. It can also connect directly to the Internet thanks to 802.11b/g/n Wi-Fi. The internal battery lasts for up to 18 hours of normal use and is recharged with an included inductive magnetic charger. Enjoy the iOS apps you love on your iPhone, tailored for Apple Watch. Leave your phone in your pocket and view notifications on your wrist. Apple Watch displays alerts from your iPhone so you can respond or dismiss them at will. Its Taptic engine gives you a gentle tap on your wrist or an audio cue when notifications come in.
The Apple Watch Series 3 is designed to withstand the pressure equivalent of being 164' underwater (5 ATM), meaning that it's suitable for rain, spills, showers, pools, and oceans at shallow depths. Its internal speaker uses its own vibrations to force water out once it's clear of the waves. Complications are small widgets that appear on the face of your Watch and provide quick access to frequently used data. You can customize which complications you'd like to appear, including built-in complications like weather, calendar, and activity, or complications from your installed apps. Customize the face of your Apple Watch to fit your needs, from chronographs to digital faces to a model of the solar system. Add the complications of your choice to the watch face so you can see the information most important to you.