i just got the piranhamax 160 portable. comes with everything, the transducer, battery, battery charger and the unit itself. all comes packed in a soft side carrying case. i havent recieved it yet, but i think it will be a good little investment. i use the kayak alot in the summer too and have a jon boat as well so i figured if it works at all through the ice thats jsut a plus in my book as its main purpose is for my boats.