The prices of dedicated GPS voice navigation systems for the car have come down by more than half over the past 12 months.

Here are some essential features.

Up-to-date maps

The dedicated car GPS system is only as good as the latest maps in it. Check for the frequency of the map updates from the company. (See models below).

Also ensure that the maps are complete. Some maps of Peninsula Malaysia feature only major roads and cities such as Johor Bahru and Kuala Lumpur. Towns in between such as Malacca are not detailed enough.

If you also want to use the unit overseas, check to see what other maps are available.

Ease of use

Test different units before buying. Having more features is not always better.

Go instead for a system that is easy to use. Some systems do not allow you to search by postal codes and names of buildings.

Customised POIs (points of interests)

With some systems, you can install customised POIs to warn you of red light cameras, speed cameras and other speed traps as you are approaching them. Go for these.

Easy mounting and dismounting

Look for a system that allows for quick and easy mounting and removal of the GPS unit for safe storage.

It's possible that by mounting the unit either on the dashboard or on the front windscreen, you are also connected to the battery charger.

GPS models available:

TiBO

Distributed by Elecom (www.elecom.com.sg) the TiBO digital navigation system made its first appearance in Comex 2005.

The most popular model, the A1000, sells for $888 and includes only maps for Singapore and Malaysia. Maps are updated twice a year but you have to go to Elecom's office on Sin Ming Road to have your unit updated.

Packard Bell

The Packard Bell GPS Compasseo 600 system ($988) comes with maps of Singapore and Peninsula Malaysia. You are able to search by postal codes, street names and numbers or by road intersections. According to its website, additional maps are downloadable from (www.packardbell-asia.com).

Garmin

Garmin supplies several models. The most popular, the nuvi 300, (around $500) comes complete with a car holder. Maps of Singapore, West Malaysia and the surrounding regions of East Malaysia are available from www.malsingmaps.com. You can also download and install POIs of Makan Sutra eating joints, Wireless@sg locations and speed traps along the Malaysian highway. Worldwide maps are available for sale from the website (www.garmin.com).

Holux

Available from Eastgear (www.eastgear.com), the GPSmile 53CLife is one of the newest entries in the market. The $499 unit uses MapKing software and maps. This system allows you to search via postal codes. Additional maps for Singapore and West Malaysia are also available from www.malsingmaps.com.