Garmin GPS421S 4-Inch Marine GPS and Chartplotter with Dual Frequency Transducer

The GPSMAP 421 is a compact chartplotter that features an ultra-bright 4" (10.16 cm) QVGA color display along with an improved high-speed digital design for increased map drawing and panning speeds. It’s ready to go with a built-in, satellite-enhanced worldwide basemap and an easy-to-use interface designed to help you navigate the open waters with ease. The GPSMAP 421 also accepts BlueChart® g2 Vision® cards (sold separately) for added features and functionality such as high-resolution satellite imagery, 3-D views and Auto Guidance technology.

Specifications:
• Physical dimensions: 5.7" x 5.0" x 2.7" (14.5 x 12.7 x 6.9 cm)
• Weight: 1.3 lbs (590 g)
• Water rating: IPX7
• Display type: QVGA display
• Display size: 2.4" x 3.2"; 4.0" diagonal
• Display resolution: 240 x 320 pixels
• Power consumption:
• Max power usage at 13.8 Vdc: 15 W
• Typical current draw at 12 Vdc: 0.6 A
• Antenna: Internal with external connection
• Mounting options: Bail with swivel or flush
• Receiver: High sensitivity
• Garmin Marine Network™ ports: None
• Accepts data cards: 1 SD™ card
• Waypoints: 3,000
• Routes: 100
• Track log: 10,000 points; 50 saved tracks
• Preloaded maps: None