Super luxury crystal column telephone

This is the coolest and most luxurious telephone B.H. has ever seen in his life! Whether it's from a visual standpoint or technological, its design is incredibly unique. The keys of the phone are actually made up of 13 dazzling crystal bars arranged in a staggered manner, leaving no doubt about its extravagant value. Meanwhile, the base uses SHARP's LED display panel, which shows a calendar when on standby and displays the dialed number when in use. After searching for a while, I still couldn't figure out where the microphone was (the white crystal bar seems to be the most suspicious), could it be that the default setting is for speakerphone? I really want to ask its inventor Tao Ma...