[Pfiffer]

This one too:

> Simply holding the watch’s built-in speaker up to the receiver of a push-button telephone allowed users to place calls to stored numbers

[palmotea]

>> Simply holding the watch’s built-in speaker up to the receiver of a push-button telephone allowed users to place calls to stored numbers

So a miniaturized version of one of this (which I totally uselessly had as a kid): https://www.youtube.com/watch?v=z438yRW0rGQ.

[dole]

As famously modded in 2600 mag, they were useful for a while...

https://phonelosers.com/redbox/tonedialer/

https://hackaday.com/2014/09/05/radioshack-phone-dialer-red-...

[piltdownman]

How on earth did we never see some early 90s hacker-culture movie do some Blue-box phreaking using this watch, similar to the (fictional) Atari Portfolio ATM hack in Terminator 2.