Hondex by Honda Electronics has brought innovations to the world since their release of the world-first transistor fishfinder in 1956.  They manufacture of a wide range of professional and commercial marine electronics. Hondex designs and manufactures all of their products in-house in Japan, so you can be sure that you are getting the best performance and a high quality unit. The HE-7300-DI offers a 10.4″ display with options for transducers from 20-210kHz at power levels from 1-5KW.