Four very similar buttons grace the front of Spracht's Aura Mobile BT: Volume Up (top right), Volume Down (bottom right), Bluetooth Pairing/Command (top left) and Microphone Mute (bottom left).At the very bottom of the device is the power button.
While the buttons may work well in a VoIP speakerphone situation (eg: for Skype), they're awful for using in the car when the device is mounted upside down on a visor. Their icons are so small and difficult to see. Especialy when driving at night.
For David Berlind's write-up on The Spracht Aura Mobile BT, see his post
in ZDNet's TestBed blog.