Leave your phone in your pocket, because the Apple Watch brings all your apps to your wrist. The Apple Watch displays alerts, notifications and messages and informs you with an audio cue or a gentle tap on your wrist. For this it connects via Bluetooth to your iPhone or directly to the Internet thanks to built in Wi-Fi. The integrated battery lasts up to 18 hours and is charged wirelessly through an inductive magnetic charger. The Apple Watch also offers tracking of your activity and includes a heart rate monitor. The watchOS operating system offers many more features. The internal storage has a capacity of 8 GB. Further the watch has a built-in speaker, microphone, and a light sensor. The OLED display has a resolution of 312 x 390 pixels and the touch sensor also reacts to the amount of pressure.