There aren’t any significant differences between the older HELIX 5 DI model and the new HELIX 5 DI G2. However, since Humminbird brought a new generation of HELIX 5 units, they also released a Down Imaging and a Sonar Only unit. Therefore, since it’s a newer model, the G2 will probably replace the older HELIX 5 DI unit.
With regards to the specs of this unit, the HELIX 5 DI G2 is a standalone fish finder. However, it does offer two types of sonar: 2D and Down Imaging. It comes with