First of all, the Ice 45 has a LED backlit display featuring 526 segments just like the 55 model, but it only has a 3-color fiber optic LCD center, as opposed to the Ice 55, which has a 6-color LCD center. Its sonar technology involves selectable dual frequency, 240 kHz / 19° @ -3dB / 455 kHz / 9° @ -3dB, providing accurate fish and lure detection in waters up to 200 feet deep, and with a 2,5″ target separation. It has an excellent power output for an ice flasher, 225 Wats RMS / 1800 Watts PTP. The standard transducer type of this unit is an Ice XI 9 19.
Also, as opposed to the Humminbird Ice 55, the Ice 45 does not come with a case. It does feature though a carrying handle, and depending on the weather conditions you’re fishing at, it may not require a case at all. This unit comes with its own charger and battery (10-20 VDC and 12V 7 amp hours battery).