Check out its capabilities and specs at https://takstarmall.com/products/takstar-amplifier-e300w
There are a few minor scrapes and scuffs on the box, but it still works fine.
Plugs into a standard 12-V vehicle port (cigarette lighter). Comes with instruction sheet.
Sells new for $50-$80; yours here for just $20.
When you call please mention you found this ad listing on OKz.ca