Uniden UM725 Fixed Mount VHF w/GPS Bluetooth - Black [UM725GBTBK] Brand_Bombora The captive hex nut is

The captive hex nut is a great feature for underwater installations

Cut-Out: 3-3/4"

rust and growths from fiberglass and aluminum surfaces with no scrubbing

Remote Horn & LEDs f/Engine Shutdown System - Black Bezel Display

fixed-divider compartments for terminal tackle

Uniden UM725 Fixed Mount VHF w/GPS Bluetooth - Black [UM725GBTBK] Brand_Bombora The captive hex nut isUM725 Fixed Mount VHF with GPS & Bluetooth Black Full Featured VHF Marine Radio with GPS Receiver Built in. Private Text Messaging Send messages over Marine Channels to other capable radios. The UM725GBT is the first marine radio to offer Bluetooth wireless text messaging using your smartphone to text with a similarly capable marine VHF radio. You and your crew will enjoy the privacy of texting boat to boat, rather than broadcasting over your radio