My Casio BM-100WJ, going to be very handy when keeping my eye on the weather 👍🏻 : r/casio
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
Casio Digital Barometer BM-100 WJ Modul 560 vintage Digital Armband uhr RAR | WatchCharts