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Best Choice Garmin 
Garmin Drive 53 5 inch glass displayBest Value Garmin 
Garmin Striker Cast, Castable Sonar with GPS, Pair with Mobile Device and Cast from Anywhere, Reel in to Locate and Disp Rugged, castable sonar device works with free striker cast app (compatible with apple or android devices) to wirelesslyGarmin 
Garmin GPS 73 International,Smartwatches SAILASSIST - Includes several sailing features such as virtual starting line, countdown timers, speed history and tack aNautilus Lifeline 
Nautilus Lifeline Marine Rescue GPS Orange Half the size of lifeline rescue RadioGarmin 
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Jetski Army Tracker MkII – Premium GPS Tracking System for High-Value Jetskis, Boats, and Marine Assets with Included SI No ongoing subscriptions—purchase once and enjoy lifetime access!26% Off Bushnell 
Bushnell BackTrack Mini GPS Navigation, Portable Waterproof GPS for Hiking Hunting and Backpacking Don't have cell coverage or battery dies on your smartphone when you are out hiking, backpacking, or hunting? 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