... serial port optional 2.professional factory supply 3.stable quality,with CE,ROHS 15" touch screen lcd displayModel NO.1503MPanel size15 ... working days according to the order quantity Sample lead time: with 3 working days after we get payment. The price based ... for batch orders,to print logo and design box.With solid & adjustable stand,touch without shake 7",8",10.4",12",15 ...