Is my H22PX Handheld Sonar System waterproof? NMP Support Center November 18, 2011 00:19 Updated The unit is completely waterproof and can be taken to depths up to 50 feet while diving. Related articles If I drop my HawkEye Handheld Sonar System will it float? I used "Goof Off" to remove a sticker from my DF2200PX and it completely destroyed the cosmetic appearance of the product. What should I use to clean it. Would be possible to use the handheld sonar just for measuring distance/range of fish in front of the diver ? Will the H22PX work while underway in my watercraft? Comments 0 comments Please sign in to leave a comment.