New product！Drift Buoy，Beidou +GPRS Dual channel communication, automatic switching. GPS, Beidou, GLONASS Samsung positioning, the sea surface positioning accuracy within 2 meters. Can remotely change the location send interval, turn on the flash, easy to recycle. Large capacity battery + solar panel charge, super Endurance. Supporting software can display map location in real time, remote send instructions, track playback, data export and other functions.