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want to go to visit the Science Museum , but not clear direction .
take the tour pal tracing lamp , it is connected with the USB interface of the
Iphone.Input the destination , according to the search path , the tracing lamp
will help you find the correct direction . IF the direction is wrong , the arrow
and light will tell you with the light start Flashing and the screen of the Iphone wil
l show the location where you are in.
Zhejiang Province, China