Raymarine SeaTalk NG Backbone Extender New Condition. Specifications for Raymarine SeaTalk NG Backbone Extender: Manufacturer: Raymarine Color: Black Features of Raymarine SeaTalk NG Backbone Extender: Sea talk-ng backbone extender For Use with e & C series widescreen g series and ST70 Systems Raymarine the world leader in marine electronics develops and manufactures the most comprehensive range of electronic equipment Included Accessories: SeaTalk-NG Backbone Extender Documentation Package Contents: Raymarine SeaTalk NG Backbone Extender Raymarine A06030: SeaTalk NG Backbone Extender New Condition