... ..it support word, excel. Powerpoint ... Red Laser PointerSize:140*15mm Laser light:red laser light Battery:3 pcs/ AG13 Output power:classII ... Appearance:cylinder shape Certificate:CE&ROHS &FDA Function :1. red laser pointer, page up and down, and option:flash memory ( ... meeting ,training, speech, it is most used in presentation 6.infrared technology1.All of our products have proceeded aging test before ...