interesting digital watches

[bxparks]

(05-12-2024 02:59 AM)xerxes Wrote:  The CASIO CFX-20/200/40/400 are interesting for calculator fans, due to their scientific functions.

Wow, I did not know that scientific calculator watches were ever made. While doing some searches on those, I came across another interesting model, the Casio CBA-10 which is a financial calculator watch with TVM functionality: https://www.digital-watch.com/DWL/1work/casio_cba-10

Has there ever been a calculator watch using RPN?

Another idle question: Is there an RPN calculator app for a smartwatch (either Android/WearOS or Apple/WatchOS)? I've never been interested in a smartwatch, but an RPN calculator on a watch might make me reconsider. Maybe.