Pen touch interactive whiteboard WB2900
Specifications:

• Signal Receiver
• Movement Detection: Infrared
• Active Area (max projection size): 150 inch diagonal
• Active Area (horizontal angle): 33 +/- 2 degrees
• Active Area (vertical angle):0-30 degrees
• Calibration Technology: Infrared Positioning
• Active Distance (from projection screen): 1.5-5 m
• Connectivity Interface: 1 x USB Cable (connection distance up to 20 m)
• Power Requirement: 4.5 -9 W (from USB port)
• Power Consumption: < 1.5 W
• Weight: 140 g

Extendable Pointer                
Movement Detection Technology                                LED Light
Power Requirement                                                  3 V CR12 3A x 2
Trigger methods of pointer                                        Button
Pen Body Weight                                                     85g (with battery)
Pointer Extendable Length                                        34.5-67.6cm (length); 1.0-1.3cm (diameter)
Net Weight                                                             61g
Stylus E-Pen
Movement Detection Technology                               LED Light
Power Requirement                                                 3 V CR12 3A x 2
Pen Body Dimension                                                13.5cm (length); 1.0-2.0cm (diameter)
Pen Weight                                                            66g (with battery)
Net Weight                                                            42g
System Requirements       
OS Required                                             Microsoft Windows xp, vista , Win7, 8,10, Linux Ubuntu, Debian
Processor Type                                                       Intel Pentium or above
RAM Size                                                                128 MB
Min Hard Drive Space                                                30 MB