$2,699.99 – $3,199.99
Helix 15 G4 Sonar Unit
Transom mount transducer (select models)
Mounting hardware
Power cable
Gimbal mounting bracket
| Specifications | MDI+ G4N | MSI+ G4N |
| Display Size | 15.4″ | 15.4″ |
| Display Pixels | 1280Hx800V | 1280Hx800V |
| Sonar Frequencies | 50/80/200 kHz | 50/80/200 kHz |
| Memory Card | Dual SD | Dual SD |
| GPS Chartplotting | Yes | Yes |
| GPS Tracklpotting | Yes | Yes |
| Dual Spectrum CHIRP | Yes | Yes |
| MEGA Down Imaging+ | Capable | Capable |
| MEGA Side Imaging+ | No | Capable |
| Model | MDI GPS G4N CHO, MSI+GPS G4N, MSI+GPS G4N CHO |
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Humminbird Helix 12 Unit
Transom mount transducer (select models)
Mounting hardware
Power cable
Gimbal mounting bracket
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