Jeken CE-3200 User Manual page 2

But this product takes the advantage of ultrasonic technic, and the
use of special high frequency (46KHz) to remove dirt and protein
deposition in 2 minutes, prevent bacterial growth, so as to protect
the lens effectively.
Do not pour in any chemical
substance except lenses care
solution or physiological saline
or purified water.
In order to prevent cross-infection,
the unit is only used to clean contact
lens, can't be used to clean other
articles.
If the unit couldn't work as normal,
stop it. Do not disassemble if you
are non-professional staff.