Garmin Nuvi 3790t  Portable GPS Navigator Specifications and Features :

Physical & Performance:
Unit dimensions, WxHxD: 4.8″W x 2.9″H x .35″D (12.2 x 7.5 x .89 cm)
Display size, WxH: 3.7″W x 2.2″H (9.4 x 5.6 cm); 4.3″ diag (10.9 cm)
Display resolution, WxH: 800 x 480 pixels
Display type: glass, dual-orietation, WVGA color TFT with white backlight
Weight: 4 ounces (113.4 g)
Battery: rechargeable lithium-ion
Battery life: up to 4 hours
Waterproof: no
High-sensitivity receiver: yes
Maps & Memory:
Basemap: yes
Preloaded street maps: yes
Ability to add maps: yes
Built-in memory: internal solid state
Accepts data cards: microSD™ card (not included)
Waypoints/favorites/locations: 1000
Routes: 100

Features:
Voice prompts (e.g. “Turn right in 500 ft.”): yes (internal and mount speaker)
Speaks street names (e.g. “Turn right ON ELM STREET in 500 ft.”): yes
Voice-activated navigation (operate device with spoken commands): yes
Lane assist (guides you to the proper lane for navigation): yes (with junction view)
trafficTrends™ (calculates routes based on predicted traffic flow): yes
myTrends™ (predicts routes based on user’s navigation behavior): yes
3-D building view (displays buildings in 3-D): yes
Auto sort multiple destinations (provides most direct route): yes
Auto re-route (fast off-route and detour recalculation): yes
Choice of route setup (faster time, shorter distance, off road): yes
Route avoidance (avoid highways, tolls etc.): yes
Bluetooth® wireless technology: yes
Garmin nüLink! Services: (receive accurate real-time travel information): no
FM traffic compatible: yes (receiver and lifetime traffic included)
MSN® Direct compatible: no
XM® compatible for U.S: no
Speed limit indicator (displays speed limit for most major roads in the U.S. and Europe): yes
Where Am I? (find closest hospitals, police & gas stations, nearest address & intersection): yes
Garmin Locate™ (marks position when removed from windshield mount): yes
ecoRoute™ (calculates a more fuel-efficient route) : yes
Qwerty or ABC keyboard (choose keyboard layout): yes
Custom POIs (ability to add additional points of interest): yes
Garmin Garage™ vehicles compatible (download car-shaped icons to your device): yes
Garmin Garage™ voices compatible (download custom voices to your device): yes
Photo navigation (navigate to geotagged photos): yes
World travel clock, currency & unit converter, calculator: yes
Picture viewer: yes
MP3 player: no
Audio book player: no
FM transmitter: no
Headphone jack/audio line-out: no
Garmin Lock™ (anti-theft feature): yes
Touchscreen: yes (multi-touch)
Dead reckoning: no
Motorcycle-friendly: no
Trucking-friendly: no
Geocaching-friendly: no
Marine-friendly: no

Additional:
This USB mass storage device is compatible with Windows® XP or newer and Mac® OS X 10.4 or later.