... time can be freely set, the cleaning process time countdown display, the default working time (180 seconds).3, use of ... items such as gold and silver jewelry, jewelry, headgear, brooches, glasses, bracelets, fountain pens, CDs, shaving knives, combs, toothbrushes, dentures, ... the skin is full of these young lubrication.2, glasses, optical instruments: All optical lenses, such as various ...