As opposed to the last year's HELIX 7 DI GPS, the HELIX 7 CHIRP DI GPS G2, as its name suggests, is a fish finder with CHIRP technology. This unit actually has two types of sonar, DualBeam Plus (2D) and Down Imaging, both enhanced by CHIRP technology. CHIRP offers superior imaging with less clutter and a better separation between targets. The unit comes with the temperature … [Read more...] about Humminbird Fish Finder HELIX 7 CHIRP DI GPS G2 Review