The 6400 has a standard Bluetooth range and looks exactly like a Bluetooth headset from Jabra, whereas the 9400 looks like a receptionist's headset that you can take around your house at up to a 450-foot range.

They both have dual-microphones for noise cancelation and both have the touchscreen to quickly switch between a cellphone, VoIP or landline connections. Both will be available later in the year for $200 each. [Slashgear]