Overview HELIX 7 CHIRP DI GPS G2 | HELIX 7 Series | 410300-1 ​Discover fish and structure, then track their every move with the HELIX 7 CHIRP DI GPS G2. See fish and vertical lure presentations by viewing CHIRP Down Imaging and Switch Fire Sonar side-by-side on the wide, 16-bit display. The reliable, internal GPS offers 2500 waypoints and 50 routes, so you can return to your most productive spots time and time again. A single, micro SD card slot delivers Hummingbird Lake Master, Auto Chart and Auto Chart Pro, as well as Navionics +.  Also has our new user interface and operating system.  CHIRP Frequencies (Out of Box Transducer) 455 kHz:  420-520 kHz 800 kHz:  790-850 kHz Maximum Depth:  600 feet CHIRP Frequencies (Optional Purchase Transducer) Low: 28-75 kHz Med: 75-155 kHz High: 130-250 kHz 83/200: 75-155/130-250 50/200: 28-75/130-250 Maximum Depth:  2500 feet, CHIRP Down Imaging, GPS, Sonar w/Temp. It changed the game once. Now it’s poised to do it again. The HELIX Series has evolved-with new, best-in-class technologies including standard CHIRP Digital Sonar, enhanced networking, and new MEGA Imaging for the most detailed sonar returns that anglers have ever seen. Innovation. Bold styling. Ease of use. In this family, the apple doesn’t fall far from the tree.