A dual-frequency transducer like this gives CHIRP sonar performance across two frequency bands from a single unit, letting an angler switch between better depth penetration (lower frequency) and finer target/structure detail (higher-mid frequency) without needing two separate transducers mounted on the transom. At 1kW of transmit power this unit has solid depth capability for a transom-mount design, suited to a broad range of inshore through moderate offshore fishing depths on a boat where a permanent thru-hull installation isn't practical or wanted. As with the other TM265 transducer in this catalogue (the LH dual-frequency variant), this one is a genuine Airmar-made transducer sold under Garmin's own accessory branding for direct compatibility with Garmin sonar-equipped displays. Garmin sells the TM265 family under its own accessory branding for guaranteed plug-and-play compatibility with its chartplotter range, and transom-mount transducers of this kind remain the most common installation choice on trailerable boats.