- br br Top Deal Review - Garmin 72H Waterproof Handheld GPSbr br Technical Detailsbr Marine-friendly handheld floats in water and is IPX7 waterproofbr 120 x 160 pixel grayscale display and 18 hour battery lifebr High-sensitivity GPS receiver acquires satellite signals quicklybr Tracks your location in challenging conditions, such as heavy tree cover or deep canyonsbr Built-in celestial data includes tide information, sunrisesunset times and huntingfishing calendar