I just googled and LOTs of info. about it out there. A lot of nylon and plastic parts inside it.
http://www.sewingpartsonline.com/sin...ine-parts.aspx
Touch and Sews are also called Touch and Throws or Sew and Throws. There's not really a high regard for them. But, if you like it and it sews well for you, that's all that matters.