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Guide to the table
Our test was conducted in the laboratory of the Australian consumer organisation Choice.
Price
Based on a survey in April 2009.
Scores out of 10
- Ease of use (40% of overall score) based on the unit’s ability to acquire a position fix, maintain waypoints and routes, track logging - and on its general usability.
- Signal acquisition (25% of overall score) measured by timing how long it took to acquire a satellite fix under both a clear sky and dense foliage.
- Battery life (15% of overall score) calculated on how many hours the GPS could repeatedly find its position before shutting down.
- Accuracy (10% of overall score) assessed by testing all the devices at precisely charted locations of varying altitudes.
- Waterproofing (10% of overall score) based on a unit’s condition after being submerged in 1m of water for 30 minutes.


