1Advanced manufacturing, ensures professional and reliable RF performance. 2With inbuilt GPS antenna and external VHF antenna 3This tracking buoy can transmit complete AIS messages. 4Configurable transmission intervals, can be connected to the PC to program MMSI data, vessel name, etc. data with programming kit 5You can set the password, the MMSI and the name of the ship cannot be changed without the password, in that way the product was lost or stolen can be easily found. 6The integrated rechargeable battery has a service life of over 240 hours. 7IPX7 high level waterproof performance, can be used in any water conditions. 8Up to 15nm long range for tracking, idea for small vessel tracking or fishing net.