The Konftel 300Mx is the world's only mobile conference phone. Insert the SIM card and start your meeting immediately, with no fuss or cables. Wherever you have mobile phone coverage. However you want, thanks to the unit's versatility and support for PC-based collaboration. You enjoy better sound quality than from a landline. The Konftel 300Mx is based on our OmniSound audio technology and supports HD Voice on the mobile network. With natural, crystal-clear sound, the nuances of the call come across and the dialogue can flow smoothly. Connecting expansion microphones enables up to 20 people to be heard with superb clarity. Konftel's mobile conference telephone is perfect if your company has chosen a fully mobile communications solution or if you need to supplement fixed devices. The battery provides up to 30 hours of talk time and charges when the Konftel 300Mx is placed on the supplied charging cradle.