With built-in GPS, GLONASS, direct fire speaker and microphone, the Apple Watch can easily accompany you on all your adventures. This water-resistant smartwatch is powered by an S2 dual-core processor, making it fast and smooth. It also supports Bluetooth 4.0 and Wi-Fi for wireless connectivity, and has a heart rate sensor, an accelerometer, an ambient light sensor and a gyroscope. Additional Details: This device's battery lasts for up to 18 hours under typical use. It has a standby time of 48 hours. It requires the Apple Watch app.