i may be wrong but im guessing that it ether has the 1/8 phono plug like a headphone cord, or none at all just dual 9v batteries.

ether way if you want it get it! there’s always a way to adapt it to work in your area.

That one would work fine.

the 3.5 as we sed before in the second picture

the modern one your used to with the center pin (2.1mm) is the modern standard, they became popular do to the mass manufacturing of pedals coming out of japan that used them.

before the mass Japan manufacturing, the mono phono plug was the U.S. standard when building there pedals and other audio equipment for years. they more recently dropped the use of this adapter to make it more convenient to all and go with the now Boss style jack. sum of EH’s pedals still use the old style plug, for example the Small Clone.