The headset is is foldable. Comes in a durable hardcase. Move the microphone arm up to mute and down to talk.1200ft (366 Meters) open space. Master 10 Hours, Remote 13 Hours. ADPCM transcoder supports up to 8 duplex 32kbs channels, fully compliant with ITU G. Most of items we producing by ourselves. But some of items we are reseller from other factory. This item is in the category "Consumer Electronics\Portable Audio & Headphones\Headphones". The seller is "photolight" and is located in this country: CN. This item can be shipped worldwide.