Raymarine A128 Multi Function Display/Dv Sonar Without Charts Powerful, go-anywhere navigation; A-Series multifunction displays Delivers the speed and simplicity of lighthouse II in a fast and fluid touch screen experience Extensive networking options, A-Series will put you in control of charts, sonar, radar and more Advanced chart plotter engine with pinch to zoom, internal 10Hz GPS for fast and smooth vessel tracking With built-in Wi-Fi you can access A-Series anywhere onboard with Raymarine Apps