... integrated design 3. hot sale,quick delivery,OEM 3.CE,ROHS We are a leading manufacturer of wireless presenter in Shenzhen,Chinawireless ... pointer penModel: V-890 Patent: 200830102998.1 Function: 1, laser pointer; 2, page up/down; 3. built-in memory optional (1G/2G/4G)Technology: ... radio frequence Contorl distance: 10m Battery :AAA*1 Dim: 132* ...