About: 9 Volt (not included)

Eveready® says they developed the first 9-volt battery in 1956, so we’ll go with that.

There's a reference to 9 Volt (not included) buried somewhere ↓ here:

Wanted a Speak & Spell, but I guess this Little Professor is okay too

Written by Mr. Bessler on September 7, 1980

Maybe I’ll get a Speak & Spell for Christmas. Read more »