Altitudial watch face features. Compass with Azimuth degrees reading. Altitude in Feet or Meters. Temperature in Fahrenheit or Celsius. Relative Humidity. Time in Standard (12 hour) or Military (24 hour) formatWorks without phone. Uses only built-in watch sensors. Does not use GPS, bluetooth or wifi. Disclaimers1. Compass is magnetic. This means it is displaying magnetic north, not true north. Also the compass may not be accurate indoors, near strong magnetic fields, near electronic devices or inside of vehicles. in particular, electric or hybrid vehicles which produce strong magnetic fields while running. 2. Altitude is calculated based on barometric pressure. This means the altitude reading may not be accurate if you are inside a pressurized airplane cabin or in a well sealed building. If you have a waterproof watch such as the Nixon Mission the altitude reading may be less accurate if the waterproof microphone hatch is in the closed position. 3. Humidity reading may be less accurate if you are using a watch such as the Nixon Mission and the waterproof microphone hatch is in the closed position.