ONE (3rd Edition)

From the , to the , to the , it's clear that TomTom's ONE unit is a popular choice. It's back again for a fourth reincarnation, this time as the TomTom ONE 3rd Edition. Although the new ONE is very similar to its predecessor, the inclusion of the "Help Me" safety feature is an excellent addition.

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TomTom's entry-level unit is almost identical in terms of aesthetics to its predecessor -- the only difference being the colour of the frame around the display, and the TomTom logo. It fits snugly into most shirt pockets and can be easily taken with you from car to car, and the tiny window mount is convenient. A power key is the only button on its exterior, hence the ONE name.

The interface is largely similar to previous models, so it's a real case of 'if it isn't broken, don't fix it'. The ONE 3rd Edition is extremely easy to use and features clearly labelled and colourful icons for all menus. Our only complaint is when changing settings; when adjusting certain preferences or settings and saving them, the screen goes back to the map display, so you have to navigate all the way through the menu again should you wish to change something else.

The unit filters street names by suburbs, narrowing down your search results to a manageable number. The general navigational experience remains superb, with highly detailed maps, clear voice instructions and quick re-routing times. The ONE 3rd Edition also performs excellently in obtaining and maintaining a clear GPS signal, even with an obscured view of the sky.

Most of the ONE New Edition's operations can be accessed via the main menu, which is split into two pages. From here you simply tap the "Navigate To..." button. You can further narrow down your search when looking for a specific address, as the ONE allows you to navigate to a city centre, specific street and house number, crossing or intersection and even via postcodes.

The maps are very detailed and can be zoomed in and out easily. They are also able to show remaining time, remaining distance, arrival time, current time, street name and speed -- and these can all be turned on and off in the preferences menu. If you don't hear the voice instruction, you can tap the left-hand side of the status bar at the bottom of the screen to repeat it.

The 3rd Edition will support Map Share, allowing you to make adjustments to your maps -- although this feature is not available in Australia as yet and there has been no word from TomTom regarding an Australian release. In overseas models, Map Share allows you to add your own POIs, update road changes and adding new streets. You are then able to share the information with other TomTom users by uploading them using the included TomTom HOME software.

Another new addition to the ONE 3rd Edition is TomTom's "Help Me" safety feature. This displays information and allows you to navigate (either by car or on foot) to a multitude of services including police stations, hospitals, mechanics, public transport, and pharmacies. It even includes first aid, traffic regulation, and repair and maintenance information in case of emergency. The unit also comes preloaded with fixed speed camera warnings.

Battery life is rated at up to two hours, which is below average. TomTom disappointingly doesn't include an AC charger in the sales package, so you'll have to charge the unit via the USB cable or cigarette lighter adapter.