You must be fun at parties. CASIO is known, and I can vouch for this from experience, to be very conservative with their numbers: with a quality cell 7 year ba

You must be fun at parties. CASIO is known, and I can vouch for this from experience, to be very conservative with their numbers: with a quality cell 7 year battery life usually means about 10, 3 year battery life usually means around 5, 30m water resistance usually means over 50m in practice, 30seconds/month accuracy usually means around 10 or even less, etc.