... 3,Fast delivery 4,1 year warranty Wireless Control Mini Led Writing Board for Store Advertising: Parameter: Glass size27* ... use the tripod;3, How to connect the board to power supply;4, How to use our ... unique remote controller. A Sets of Led Writing Board: Our Service:1, Well-trained employeea are at ... hrs, SERIOUS CUSTOMER ONLY. About Us: Wireless Control Mini Led Writing Board for Store Advertising