The DuraFon PRO-PIB20L is the perfect starter package for any business requiring workplace mobility and multiple handsets. This package includes (4) DuraFon handsets along with the DuraFon PRO (4) line base unit. In addition this kit also includes an extra battery and a DuraPouch for each handset for added protection. The DuraFon PRO-PIB20L also includes our SN-AK20L external antenna kit with 66' of low loss coax cable.