I have a Humminbird Helix 9 MDI GPS G3N that works great and is in almost brand new shape as it was only used on 4 week long fishing trips. Head unit only – all wiring and accessories can be purchased online. Also comes with a microsd map card - Humminbird Lakemaster Chart Southeast States Version 4 which shows detailed maps of major lakes in AL/FL/GA/LA/MS/SC/TN. The head unit display is protected by a Graph Glass Anti-Glare Screen Protector which makes the screen easier to read in sunny conditions and protects it from any scratches, chips or breaks. I used this unit at the bow as it easily wired into my Ultrex trolling motor and used it’s built in DI transducer. This is one of the best and easiest units I’ve ever used with crystal clear images. This unit has too many features to list but you can find all of them online, along with a user manual, at Humminbird’s website by searching the model number Helix 9 MDI GPS G3N CHO. I’m only selling this unit because I haven’t been able to go fishing and can use the money to do other things. $650 firm, NO TRADES.