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[619-SWIM-DOG]

The fish finder I use is 12v. Most but not all AA are 1.5v so 8 AA worked great. This set up last me a couple of days on the water. I started using rechargeable batteries(make sure they are 1.5v) so it would be more cost effective and less damaging on the environment. You couldmuse this set up for any FF. Its a simple way to do it and have good results. PVC, mariners goop, sand paper and a rubber cap and screws. There are many like it but this one is mine. It works really well and just use a spong to soak up the water after your done. Good luck