The Nokia LD-4W’s built-in chipset is SiRFstar III-LT. In contrast to its predecessors, it’s the most power-efficient and smallest, manifestation yet of SiRF's flagship SiRFstarIII architecture.

The SiRF III architecture allows the equivalent of 200,000 correlations, in contrast to the older ones which used sequential search process allowed a few hundred to a few thousand only. This increases the GPS sensitivity and allows it to work in many indoor environments, through urban canyons, and under dense foliage. SIRF III chipset supports both WAAS in the US or EGNOS systems in Europe for even better accuracy.

For the purpose of our test we used the widely-popular TomTom Navigator. After starting the application for the first time, we set TomTom for other NMEA GPS and after about 1 minute we have a location lock! The time it takes for the GPS to acquire its location for the first time is called cold start and the 1 minute we got was a good result. If the navigation application is closed and the restarted, the GPS needs just a little over five seconds to reacquire its location.

In comparison to the previous model LD-3W, the battery life of the LD-4W is decreased, due to its small size. According to the official data, the device can be used for up to 10 hours of continuous tracking and up to 4 days in standby mode.


Overall, Nokia LD-4W is a beautiful and compact GPS module, which can be used daily while driving or walking. It is small enough to conveniently carry it in your pocket. Since it is using probably the best chipset on the market at present, you can be sure that the device will not let you down, even when there is a thick fog.


  • Very light and small
  • Fast and accurate positioning
  • Water resistant


  • No regular house charger

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