There's really nothing much to say about the design of the Nuvi 1390T. It's rectangular and rounded; new elements are restricted to the piano black bezel, rubberised back and an added dash of thinness. Garmin keeps on telling us that it's an engineering-led company, so it's entirely likely that the design department consists of a man who's rapidly becoming the world's greatest expert on baseball statistics.
Within the 1390T's neat, but non-descript body, there's a bog standard 4.3-inch touchscreen with a matte finish. Except for the power switch along the top edge, the Garmin is controlled entirely via this 480x272 resolution screen. The windshield mount is pretty compact, easy to set up, sticks soundly to the windscreen and offers plenty of adjustability when affixed.
The interface has also only received a mild tweak or two, with the main menu gaining a few reflections and a few spiffy animations for that extra bit of spit and polish. Functionality-wise, it's the same Garmin interface that we know and love.
The main screen features two large icons (Where To? and View Map), underneath which are an array of smaller icons for the phone, volume and tools. Unlike lesser Garmins, destination entry is not hobbled by the ABCDE keyboard layout, as a proper on-screen QWERTY keyboard is provided.
Bluetooth hands-free, text-to-speech, camera locations, junction view and lane guidance are standard inclusions with both the 1390 and 1390T. As its T suffix suggests, the 1390T comes with a lifetime subscription to Suna's traffic messaging service and a TMC (traffic messaging channel) antenna built into the in-car charging cable. The cable is double the regular thickness and has a chunky rectangular segment which, on our car at least, annoyingly jingle jangled against the dash.
In Sydney, Melbourne, Brisbane, Gold Coast, Adelaide, Perth and Canberra, the 1390T is able to warn drivers about roadworks, accidents, special events and plain old traffic jams. At times it works as theory says it should, at other times we encountered incidents that had already cleared up, events that had yet to begin and jams that hadn't been picked up. Known delays can be viewed as either a list or a fiddly overlay for the main map screen.
We were able to sync up a variety of mobile phones easily with the Nuvi. Sound quality is passable but the mic's lack of sensitivity means that raising one's voice is a necessity in less quiet situations. In general, it's fine for a quick status update, but not really suited to a discourse on our government's immigration policies. The text-to-speech system for pronouncing street names works OK, but does stumble from time to time with some Aboriginal, Australian and Irish names.
After ripping open 1390T's box and hurriedly affixing the unit to our windscreen, we rushed (at legal speeds, of course) to our nearest red light camera and — knock us down! — discovered that Garmin has finally pre-installed speed and red light camera warnings. Visually there's a small map icon, a black warning bar (the text for which is on the small side) and a small warning chime. School zone alerts still need to be downloaded and installed manually, though; find out how by checking out.