Physical & Performance: Unit dimensions, WxHxD: 5.0" x 4.9" x 2.5" (13.4 x 12.5 x 6.1 cm) Display size, WxH: 3.5" x 2.3", 4.0" diagonal (8.9 x 5.8 cm, 10.2 cm diagonal) Display resolution, WxH: 160 x 100 pixels Display type: 4-level grayscale LCD Weight: less than 1 lb (454 g) Battery: none Battery life: none Waterproof: yes (IPX7) Antenna: internal or remote NMEA output: NMEA 0183 RoHS version available: no Maps & Memory: Basemap: no Preloaded maps: no Ability to add maps: accepts points of interest data Built-in memory: 1 MB Accepts data cards: none Waypoints: 500 Routes: 20 Track log: 2,048 points Features: Garmin radar compatible: no Garmin sonar compatible: no CANet? compatible: no Garmin Marine Network? compatible: no Supports AIS (tracks target ships' position): no Supports DSC (displays position data from DSC capable VHF radio): no Audible alarms: yes Tide tables: yes Hunt/fish calendar: no Sun and moon information: yes 3D map view: no Auto Guidance: no Automatic routing (turn by turn routing on roads): no XM WX Weather & Radio for U.S. compatible: no Voice prompts: no Remote control: no Headphone jack/audio line-out: no Audio/video input/output: no Portable: no Automotive/motorcycle-friendly: no