CASIO DIGITAL WATCH 560 BM-100WJ BAROMETER DEPTH ALTI | eBay
My Casio BM-100WJ, going to be very handy when keeping my eye on the weather 👍🏻 : r/casio
RARE Vintage 1989 Casio BM-100W Digital Barometer Watch, Made in Japan, Mod. 510 | WatchCharts
Casio BM100 - 1989 - It was the first watch to have a triple sensor inside capable of measuring pressure, altitude and depth. Definitely cool 😎 : r/ casio