1. The Home/Power key is used to return to the clock screen, and to power the device on and off. Quickly double-press the Home/Power key to access S Voice.
   
2. The Speaker is located on the left side of the device.
   
3. The Microphone is located on the right side of the device.
   
4. The SIM card tray is located on the back of the device.
   
5. The Charging terminal is used to charge the Gear S via the Charger Dock.
   
6. The Heart Rate Sensor is used to measure your heart rate.