Dedicated buttons: Mark, Enter, Quit, Menu, Find, Zoom Out/In with eight-position rocker pad Antenna: Quad-helix with external antenna capabilities; WAAS GPS receiver with accuracy of 10 feet (or better) in North America Crisp display: High resolution, high contrast, four-level grayscale display (1.5 x 2.2 inches; 2.6 inches diagonally) Long battery life: 28 hours (typical use) on two AA batteries Multi-platform navigation (GPSMAP 60 only): On-road or off-road navigation; accepts data from Garmin’s MapSource products (City Select for driving, and U.S. Topo and 24K Topo for hiking, Recreational Lakes for freshwater and BlueChart for saltwater applications) Waterproof to IEC 60529 IPX-7 standards – can be submerged in one meter of water for up to 30 minutes Lightweight: 5.4 oz. Alarms: Proximity, anchor drag, and off-course alarms; built-in alarm clock that wakes up the unit