Digital CHIRP Dual Spectrum 2D and Digital CHIRP MEGA Down Imaging; Dual Spectrum 2D CHIRP with 25 ° and 42 ° coverage @ -10dB; 455/800/MEGA DI CHIRP with 45 ° and 75 ° @ -10dB. This transducer was designed specifically for marine environments, and is mounted to the trolling motor. Only compatible with MEGA DI HELIX models.








