Deeper Smart Sonar PRO is a Wireless (Wi-Fi*) portable castable sonar, providing detailed accurate sonar feedback straight to your smartphone. Simply attach your Deeper PRO to your vessel or attach it to your fishing rod and you are ready to go. This versatile, powerful fish finder is very compact (2.5″ / 6.5cm in diameter), it scans down to 260 ft / 80m, is able to separate targets as small as 1″ / 2.5cm and provides you 5.5 hours of continuous usage on single charge (2 hours for full charge). Mark fish, locate structure and features, map out any water from your kayak or boat, and start fishing smarter with the Deeper PRO. * Mobile Data is not required. Deeper acts as a Wi-Fi hotspot that connects with your smartphone. HIGH SPECS: Casts out up to 330ft and scans down to 260ft. Precise 2.5cm target separation. Compatible with iOS and Android devices. REAL-TIME DATA: Two beam frequencies with 15 scans per second. View depth, see bottom structure and consistency, vegetation and fish. GPS MAPPING: Create bathymetric maps from the boat, canoe, kayak. Access all your scans, maps, points of interests, photos and notes on the Fish Deeper app and web platform. 4 SEASON FISHING: Versatile fish finder suitable for any season and fishing type. Great for on shore fishing, ice fishing, boat and kayak fishing. EASY TO INSTALL: Great addition to your boat or kayak accessories. Installs in seconds. No drilling, cables, or wires required.