Deeper PRO Smart Portable Sonar - Wireless Wi-Fi Fish Finder for Kayak and Ice Fishing 4 SEASON SONAR: use for ice, kayak, shore fishing. 3.5oz, wireless, cartable sonar  versatile and accurate. Syncs with iOS/Android devices WIRELESS: syncs to phone/tablet using Wi-Fi (like a hotspot). NO CELL OR INTERNET SIGNAL NEEDED and Turn OFF Cellular data for uninterrupted connection. DETAILED DATA: fish location, structure, contours, depth, temp, vegetation. 260ft scanning depth, wide/narrow beam scanning, 15 scans per sec KAYAKERS DELIGHT: install in seconds, no battery or cables, smooth trolling. Make depth maps live as you troll, view/share maps on any computer ICE FISHING: light, cable free ice flasher, 0.5 target separation and zoom for lure tracking. GPS Ice Hole Marking to return to best spots