MAIN FEATURESGPSMAP 495(2009 model) provides the same advanced features of the GPSMAP 496, minus XM™ compatibility and preloaded maps Handheld GPS( only once used to check its operation)Differential-ready 12 parallel channel GPS receiverPreloaded SafeTaxi airport diagramsBuilt-in AOPA airport directory dataAltitude sensitive Smart Airspace alertsBuilt-in Jeppesen database with terrain and obstacle databasesTerrain/obstacle display with pop-up warnings5 Hz update rate on maps and "Panel" instrumentsAdd optional MapSource® City Navigator® detailed street maps to receive voice-prompted turn-by-turn directions to addresses and points of interest.OTHER FEATURESRS232 port with NMEA 0183, RTCM 104 DGPS data format and proprietary Garmin USB interfaceCan connect to Garmin SL30 & SL40 for frequency tuning and GTX 330 for TIS traffic alertsAccepts standard Garmin data cards and pre-programmed data cardsBuilt in celestial tables for best times to fish & hunt, sunrise & sunset, sun & moon by date and positionWater resistance, IEC 60529 IPX7 standards (submersible to 1 meter for 30 minutes)Detachable gps antennaRechargeable lithium-ion battery provides 5-15 hours of use depending on backlight settingsPackage includes: GA 26C portable antenna, carrying case, USB interface cable, free single Jeppesen update, vehicle power cable, yoke mount, auto mount, owner's manual,  AC power adapter,SPECIFICATIONSSize: 5.7"W x 3.2"H x 1.9"DWeight: 14.2 ozDisplay: 3.75" diagonal, 256-color display w/backlighting (480 x 320 pixels)Case: Fully gasketed, high-impact plastic alloy, waterproofTemperature: 5°F to 140°FBattery Life: 5 - 15 hours based on the backlight usage Receiver: Differential-ready 12 parallel channelAcquisition Times: approx 15 seconds (warm start)approx 45 seconds (cold start)approx 5 minutes (first time/AutoLocate®) Update Rate: 5/seconds, continuousGPS Accuracy: 15 meters RMS 95% typicalDGPS (USCG) Accuracy: 3-5 meters 95% typical DGPS (WAAS) Accuracy: <3 meters 95% typical with DGPS correctionsWhat's in the Box:• GPSMAP 495• Atlantic International basemap • Auto mount • Yoke mount • GA26C portable antenna • USB cable • AC Power adapter • Vehicle Power adapter • Carrying case • Owner's manual Maps, Databases & Memory: Basemap: yes Jeppesen® database: yes Types of Jeppesen databases: full and ARTCC, FSS frequencies and final approach waypoints Jeppesen database coverage areas: Supplied with Atlantic (European) as standard, Americas or Pacific available to order Preloaded SafeTaxi™ airport diagrams: (U.S. only) Preloaded AOPA Airport Directory: (U.S. only) Preloaded maps: no Ability to add maps: yes Accepts data cards: yes (Garmin data cards) Built-in memory: internal solid state Waypoints/favorites/locations: 3,000 Routes: 50 Features: Moving map: yes Instruments page: yes Built-in HSI: yes Traffic Information Services (TIS) alerts compatible: yes Audible terrain alerts: yes Smart Airspace Feature (generates and displays altitude-sensitive alerts): yes Separate serial and USB interfaces: yes Automatic logbook: yes Voice prompts (e.g. "Turn right in 500 ft."): yes 3-D map view: no Custom POIs (ability to add additional points of interest): yes XM WX Weather & Radio for U.S. compatible: no Car-friendly: yes