For wireless conferences ehre and when it's convenient. Connects to your cell phone or computer via USB for VoIP calls. Embedded line mode enables you to connect DECT, cell phones and USB simultaneously for multi-party calls. Directory of 500 contacts and 20 call groups. Use the conference guide to easily set up multi-party calls or pre-programmed group calls. Reception area up to 320 sq. ft. Built-in recording function enables to record your calls on an SD memory card. Optional expansion microphones. Rechargeable battery offers 60 hours of talk time.