I've modded it with the following:

a custom pitch control with a range of 0% [tape stop] to around 100% at full tilt. At max speed it runs at 4.8cms

you can achieve some low speeds with this machine - great for ambient drone or whatever experimental musical things!

tape wow and flutter is more obvious at lower speeds

the pot is very sensitive- just pitch the knob accordingly for the desired speed

demo of the pitch mod here - https://www.youtube.com/watch?v=NqLr3SbnQD4

Manual and power supply included- takes 12v DC center negative

overall, a very simple entry level cassette 4 track recorder. super simple.

please check photos carefully as this does form part of its description

I have more for sale on reverb page

https://reverb.com/uk/shop/lightspeed-mods-and-repair