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1.Replaceable toothbrush head held by the handles firmly.
Put the toothbrush head on the button of one handle and
the otherhandle will buckle to it firmly.2.A small pliable brush locates at the peak of the handle,
which can help to clean the glass at the same time and
prevent dirts deposition. And the small clean brush is
collapsible.3.Toothbrush handle and the clean brush are jointed to an axis.
Chongqing University
Chong qing, China
Chongqing University
Chong qing, China
Tingting Jiang、Lili Song