How to buy a Sat Nav system
An in-car satellite navigation system could end all those map-reading arguments. Here are some tips to ensure you don't have another about which one to buy.
• Spoken instructions
These should come as standard, explaining
the route step-by-step as you travel.
• Route update
This recalculates the route if you are forced to deviate. They come on all basic models from around £200.
• Maps
All models come with maps; more advanced ones will also offer European routes.
• Postcode address finder
This is the fastest, most accurate way of putting the destination in, and comes as standard on models costing £250 or more.
• Touch screen
This is easier to use than a console, and comes with most models costing £350 or more.
• Screen size
The larger the screen, the easier it is to follow. A 3.5-inch screen is a useful option.
• Internal battery
If the system has a battery, you don't have to recalculate your route when you stop for a break, and you can use it outside the car.
• Traffic updates
Some packages offer either free real-time traffic updates or the ability to subscribe to a service providing them. This option usually comes on more expensive models costing up to £450.
• Safety cameras location
Some models allow you to subscribe to a service telling you where every camera in the UK is located.
• Internal hard drive
This stores all the data you use, so you can return to addresses and routes. It is available on some models from around £350.
• Extras
Some systems allow you to play music files, some help you find the nearest petrol station or car park, and others offer remote control operations. But these options should not justify going for a top-of-the-range £550 model unless they are vitally important to you.
• PDA solution
If you already have a handheld personal organiser, you may prefer to get some software, from around £100, and a bit of GPS kit. The kit you need depends on whether you have Bluetooth or an integrated GPS receiver in your PDA. The total cost could be as little as £200.
• Mobile phone solution
You can customise some mobile phones from as little as £200. Bear in mind, however, that most screens are rather small for this purpose.
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