Liu glasses are the special variety of glasses that Liu always wears. These glasses are known to have special abilities sometimes (like Inspector Gadget style).
Liu glasses abilities- Liu glasses seem to provide pinpoint vision that even exceeds that of normal vision. Liu glasses are also rumored to have radar and night vision, but this hasn't yet been established.
Powers not possessed by Liu glasses that could be good- sonar, if liu glasses had sonar, liu wouldn't have had to say "ow, my foot." Liu glasses also fail when tried by people who don't have special liu glasses wearing power.