Casio Protrek for $285 for sale from a Private Seller on Chrono24
It finally came. 1989 Casio BM-100WJ. Gave it a clean and new batteries. Everything works but the sensor. Still love it : r/casio
Casio BM100 WJ - Triple Sensor: Baro, Alti and Depth - 1989 - It was the first watch to have a triple sensor inside capable of measuring pressure, altitude and depth. It