The application relates to a connection interface for underwater applications, in particular for water sport equipment, including a connection unit for transmitting data and having a charging coil for inductively transmitting energy to a similar connection interface, the connection unit being designed as an optical connection unit, in particular as an infrared connection unit, for transmitting and/or receiving an optical signal.

The application relates to a connection interface for underwater applications, in particular for water sport equipment, including a connection unit for transmitting data and having a charging coil for inductively transmitting energy to a similar connection interface, the connection unit being designed as an optical connection unit, in particular as an infrared connection unit, for transmitting and/or receiving an optical signal.

Exemplary systems enable operation of mobile devices underwater. Antennas on a buoy assembly allow a mobile device to maintain wireless communications. A series of cable segments connect a buoy assembly to a waterproof case capable of sealing a mobile device.

Exemplary systems enable operation of mobile devices underwater. Antennas on a buoy assembly allow a mobile device to maintain wireless communications. A series of cable segments connect a buoy assembly to a waterproof case capable of sealing a mobile device.

A wearable electronic device for detecting diver respiration comprises a transducer element and a processing element. The transducer element is configured to receive sonar waves and communicate a corresponding receiver electronic signal. The processing element is configured or programmed to receive the receiver electronic signal, identify that a breath of the diver has occurred from the receive electronic signal, determine a respiration rate of the diver based on a plurality of breaths, and present an indication of the respiration rate to the diver.

A wearable electronic device for detecting diver respiration comprises a transducer element and a processing element. The transducer element is configured to receive sonar waves and communicate a corresponding receiver electronic signal. The processing element is configured or programmed to receive the receiver electronic signal, identify that a breath of the diver has occurred from the receive electronic signal, determine a respiration rate of the diver based on a plurality of breaths, and present an indication of the respiration rate to the diver.

A diving breathing tube with a safety warning device includes a tube body. One end of the tube body is provided with a mouthpiece, and the other end is provided with a tube head. The tube head includes a cover body and a cylinder body. The inner portion of the tube head is provided with a light warning device. The cover body is made of an insulating material with light transmission capacity. A waterproof sealing structure is adopted respectively between the cover body and the cylinder body of the tube head and between the tube head and the tube body. In the present invention, since the inner portion of the tube head of the diving breathing tube is provided with a light warning device, the light warning device has a slow flashing warning function, and can give out an SOS international standard rescue signal when a danger is encountered.

A diving breathing tube with a safety warning device includes a tube body. One end of the tube body is provided with a mouthpiece, and the other end is provided with a tube head. The tube head includes a cover body and a cylinder body. The inner portion of the tube head is provided with a light warning device. The cover body is made of an insulating material with light transmission capacity. A waterproof sealing structure is adopted respectively between the cover body and the cylinder body of the tube head and between the tube head and the tube body. In the present invention, since the inner portion of the tube head of the diving breathing tube is provided with a light warning device, the light warning device has a slow flashing warning function, and can give out an SOS international standard rescue signal when a danger is encountered.

A diver navigation, information and safety buoy system and method. The system and method incorporate a float device, and an ultra-short baseline acoustic array in communication with a diver transponder. The system and method also include a GPS system having a GPS antenna device mounted on the float device. The system also includes an AIS system having an AIS antenna mounted on the float. A diver processor permits a diver's location information to be calculated, and the diver can be navigated to a desired destination.

A diver navigation, information and safety buoy system and method. The system and method incorporate a float device, and an ultra-short baseline acoustic array in communication with a diver transponder. The system and method also include a GPS system having a GPS antenna device mounted on the float device. The system also includes an AIS system having an AIS antenna mounted on the float. A diver processor permits a diver's location information to be calculated, and the diver can be navigated to a desired destination.