GPSMAP 640, 5.2", WVGA, 800x480, 9h, NMEA, SD, 490.4g
Garmin GPSMAP 640, Internal storage, 3D, 5.2", 800 x 480 pixels, 4.5 x 2.7", SD
Garmin GPSMAP 640. Map storage: Internal storage, Map view options: 3D. Display diagonal: 5.2", Display resolution: 800 x 480 pixels, Display size (HxV) (imperial): 4.5 x 2.7". Compatible memory cards: SD. Form factor: Fixed, Product color: Gray, Interface type: Touch Screen. Battery technology: Lithium-Ion (Li-Ion), Battery life (max): 9 h