Qualities of this watch: - Lightness and relative compactness - Successful design - Ease of use - Reliability (including the altimeter must be calibrated course because the pressure varies!) - Very attractive price: it was worth the money and this is a good alternative to pro treks, pricey Defects - Needless thermometer wrist - Glass is easily scratched - Weakness relative to large shocks (not shown anti shock) - No memory altitudes - A solar collector would be a +