USB Phone 1 supplied stickup hook for hangup convenience 2 usb interface pnp No external power/sound card required 3 high quality for full duplex communication 4 handy, style, portable for notebook pc 5 built-in driver No need for any additional driver for windows 6 compiant with all kinds of voip applications 505*32*23cm/carton nW 5kg gW65kg Quantity 24pcs