This easy-to-use Garmin GPS Handheld Navigator is the perfect navigational solution for boats, sailboats or small watercraft that do not have a chartplotter. Its also ideal as an important emergency navigation backup for all vessels. Its high-sensitivity GPS marks and stores 1, 000 waypoints and 100 tracks so you can navigate right back to them. Use on land or water it floats! Features SailAssist, including virtual starting line, heading line, countdown timers and tack assist. Specifications• Physical dimensions: 2.6" x 6.0" x 1.2" (6.6 x 152.2 x 3.0 cm)• Display size, WxH: 1.4" x 2.1" (3.6 x 5.4 cm); 2.6" diag (6.6 cm)• Display resolution, WxH: 128 x 160 pixels• Display type: 4 level gray LCD• Weight: 7.2 oz (203.1 g) with AA batteries• Battery: 2 AA batteries (not included)• Batttery life: +18 hours• Water rating: IPX7• High-sensitivity receiver: Yes• Interface: Serial and USB• Waypoints/favorites/locations: 1, 000• Routes: 50• Track log: 10, 000 points, 100 tracks• Floats: Yes• Hunt/fish calendar: Yes• Sun and moon information: Yes• rea calculations: Yes 4 Level Gray Color 128 x 160 Pixels Resolution 2.6 Inch Length x 6.0 Inch Width x 1.2 Inch Height | Garmin GPS Handheld Navigator in Grey