Back from the grave: Casio BM-100WJ (long post) | WatchUSeek Watch Forums
Denny Osmansyah on Instagram: "FS : Vintage Casio BM 100 WJ Digital Barometer Japan - Very Rare . Used . Original . Beep on . Light on . Sensor Ok . LCD
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