1.new style 2 in 1 Laser Pointer. 2.Slide PPT Software 3.Receiver can be stored into ... of ID number to avoid multi-user interferences- Pen-type :2 in 1 extreme portability- Unique design with colors (Black, Blue, Silver ... Wavelengt :670nm Class II,IIIInterface USB HID Spec., Ver.1.1,2.0Operating System win98/SE/ME/2000/XP/Linux, WinCESoftware MS ... 67mm x 8mm x 20mm Weight 20g 10g New 2 in 1 Laser Pointer