CM275 Low-High Wide Chirp, 1kW, M&M Transducer DT 1 kW Get more coverage under your boat with Airmar s unique wide-beam, low and high-frequency, Chirp-ready CM275LHW. The high band operates across a frequency range of 150 to 250 kHz and has a fixed 25 degree beam for all frequencies which results in superior resolution. The constantly wide beam provides twice the coverage and clear fish arches on the display compared to most high-frequency, narrow-beam transducers. The high wide is the ideal choice for both inshore and pelagic fishing, where resolution and maximum coverage under the boat are essential down to 152 m (500 ft). The low-frequency band and 1 kW of power support great deeper-water performance. And all this is packed into one SEALCAST housing. Get the best of both worlds with Airmar s Chirp-ready transducers with wide-beam coverage.