GME PLB MT-410 SERIES (DISCONTINUED)Built-in GPS (option) Model MT410GTypical accuracy – MT410G:<100 m, MT410 :<5 kmHigh visibility flashing LED Lightweight, compact and robustDigital 406 MHz, 5 watt transmission plus 121.5 MHz homing signal. Newer Post GME MARINE GPS PLOTTER GP450X (DISCONTINUED) Older Post GME EPIRBS MT-403 SERIES (DISCONTINUED)