Raymarine Wi-Fish DownVision Blackbox Sonar with Wi-Fi Black box Wi-Fi CHIRP DownVision sonar module Connect with the free Wi-Fish mobile app for iOS and Android devices Return to the location of favorite fishing spots using the Wi-Fish augmented reality mode and your phone's GPS Pause, zoom, and rewind the sonar right on your phone; Save you favorite catch and share with friends online Award winning wide-spectrum CHIRP DownVision sonar technology for photo-like images, high-speed tracking, and better deep water resolution; Includes transom mount CHIRP transducer with temperature sensor