I have calibrated the watch per the instructions but the altimeter still goes to 325 feet. The compass also has an error of up to 20 degrees, and the manual says this is "normal". I'm a little disappointed. The barometer is accurate (verified by airport weather data). The manual also states that these readings should not be used for specific activities such as flying, skydiving, etc. So this is more of a fun toy than a reliable tool.
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