Airmar B75M Bronze Chirp Thru Hull 12° Tilt - 600W - Requires Mix and Match CableThe Airmar B75M Bronze CHIRP Through Hull 12 Tilt is a rugged, high performance transducer designed for serious anglers who demand maximum detail and reliable performance on every voyage. With 600W transmit power and a bronze thru hull housing, it delivers clear sonar in saltwater conditions and supports boats up to 25 ft (8 m). Power: 600W transmit power for strong, clear returns in demanding conditions Housing: Bronze thru hull housing for lasting