I bought this unit but it's kind of big for my boat It has less than 70 hours on it and I bought the upgraded Quadra Beam Transducer for it. It is a transom mount transducer but If you wanted a through hull you could get one. It comes with everything including GPS and puck, the manual , the ducer. The msrp is 2299.99 and you can see the details on the unit here. http://store.humminbird.com/dyn_prodlist.php?k=271391 It marks fish beautiful and is a very powerful sonar. No more eye strain, it's a 10.4 inch screen and it shows up great in sunlight. Looking to get 1700 for it. Any questions just pm me.