Garmin AIRMAR B275LHWGarmin AIRMAR B275LHW Garmin AIRMAR B275LHW are a premium 1kW thru hull transducer that offers the "best of both worlds." By combining a low frequency CHIRP for deep water performance with a unique High Wide beam, this unit delivers twice the coverage under your boat compared to traditional high frequency transducers. The "Wide" element is the game changer; with a constant 25 beam width across the entire high frequency band, it creates crisp, large