Raymarine a65 Multifunction Navigation Display North American Gold Bundle, 5.7-Inch 5.7" touchscreen color LCD Built-in GPS & Wi-Fi Includes Navionics Gold cartography Optional Sounder Module Wide range of optional network features Display Type: LED backlit, sunlight-viewable, 5.7"diag touch-screen, 640 x 480 Pixels 50-channel internal GPS Included Accessories: Flush-mount kit, trunnion bracket, silicone-rubber sun cover, power/data/video cable Warranty: Three years (with product registration) No built-in sonar module