Garmin 72H Waterproof Handheld GPS with High-Sensitivity Marine-friendly handheld floats in water and is IPX7 waterproof 120 x 160 pixel grayscale display and 18 hour battery life High-sensitivity GPS receiver acquires satellite signals quickly Tracks your location in challenging conditions, such as heavy tree cover or deep canyons Built-in celestial data includes tide information, sunrise/sunset times and hunting/fishing calendar