The Garmin GPSMAP 72h is a fantastic entry-level GPS unit. This handheld unit features 500 waypoint capability, allowing you to mark favorite spots and landmarks. You'll never have to worry about wet weather ruining your unit. With its weatherproof design, the GPSMAP 72h will stay dry and functional, is submersible to 1 meter for 30 minutes and floats. The GPSMAP 72h is best powered by lithium AA batteries and features a runtime of up to 18 hours. This handy little unit also features hunt/fish calendars and sun/moon information, to give you the best data for your hikes, hunts and fishing trips. The high-sensitivity GPS receiver and ensure maximum reception and precise location placement.