... .USB receiver 5.Made in China RC Green Laser Size:148*14.7mm Color:silver Battery:2 ... pcs AAA Laser light: green laser light Output power:classII<1mW&ClassIII<5mW ... 15m Certificate:rohs. Fda& ce Features: 1.green laser pointer, page up and down 2.usb plug, ... powerpoint, website,ACDsee. Acrobat reader 5.it is used mostly in presebtation such as meeting,training,speech,teaching ...