Dive computer with free dive mode and wireless data transmission

A dive system comprising:

• a pressure transmitter comprising:
• a first pressure transducer connected to a processor unit;
• a transmitter connected to the processor unit;
• a memory connected to the processor unit;
• wherein the first pressure transducer is configured to measure pressure information;
• and
• wherein the transmitter is configured to transmit the pressure information to one or more dive computers;
• the one or more dive computers comprising:
• a receiver configured to receive the pressure information from two or more pressure transmitters;
• a processor coupled to the receiver;
• and
• a display coupled to the processor;
• wherein the processor is configured to show pressure information on the display received from at least one of the two or more pressure transmitters.

A method of operating a dive computer comprising:

• recording two or more first identifiers, where each first identifier is associated with a pressure transmitter;
• receiving pressure information from two or more pressure transmitters, the pressure information comprising second identifiers and pressure measurements;
• determining whether the pressure information contains one of the two or more first identifiers;
• and
• displaying a message indicative of the pressure information that contains one of the two or more first identifiers.