ASA HS-1A Headset

Where are these manufactured?

does this headset come with the little piece of foam for the mic?

Headphone jack is normal 1/4" phone plug, the microphone plug is of an abnormal size, does anyone know where to get a 1/4" adaptor? Thanks

Can this be used on a computer? My teen son keeps breaking his computer one and im looking for something more durable.