One of the reason why I got rid of my Polar RC3 GPS was because of the lack of reading altitude, a big no go in my opinion. Polar has now realized its mistake and released a new color with this update:
"Polar RC3 GPS shows altitude data it receives from the Global
Positioning System (GPS). To show altitude at the beginning of a
training session, the monitor needs to be connected to a minimum of 6
satellites. During training, the number of connected satellites can be
fewer but if the number goes down to 0, RC3 GPS will again need the
minimum of 6 satellites to re-establish altitude."
For those who bought the first edition an update is possible....For a Fee!!!! Come on Polar, face your mistake and do it right! Offer the update for free!!!