Patent ID: 7852710

Claim:
A tide display watch comprising: a waterproof housing; a memory located in the waterproof housing for storing tide information including a tide height and an associated time of day for each of a plurality of surf spots; a radio frequency transceiver located in the waterproof housing for downloading and updating the tide information; a global positioning system receiver located in the waterproof housing for determining geodetic position; and a display located in the waterproof housing, the display simultaneously displays a current time, a graph displaying tide heights on a vertical axis and time increments on a horizontal axis with a numeric labeling of the time increments on the horizontal axis, the graph including the tide height at the current time for the geodetic position, and an exact numeric value of the tide height separate from the tide heights on the vertical axis of the graph, the numeric value being continuously updated to represent the tide height at the current time for the geodetic position.