KT-690 series satellite buoy is specifically designed for the purse seine fishing fleets and long-line fishing vessels to promote sustainable and effective tuna fishing. KT-690 is built-in SkyWave’s newest Isatdata Pro terminal and scientific echo-sounder, which can provide reliable data massages via Inmarsat IDP global satellite network with highest payload and lowest latency of any L-band satellite store-and-forward service. It is equipped with four pieces high efficient solar panels, rechargeable battery, temperature sensor, four LED flashlights and magnetic switch. Also, it can be moored on driftwoods or any floating objects (FADs), and will provides the real time information to fishing vessels.