KOKUYO's laser pointer offers approximately 60 hours of continuous use. It employs bright green light for enhanced visibility. The buttons on the pointer allow for page up/down, slideshow start/blackout in PowerPoint (simply plug the receiver into a USB port for immediate use, no driver installation required). It uses RF (radio frequency) communication for omnidirectional transmission. - Brand: KOKUYO - Model Name: ELP-GP30 - Continuous Use Time: Approximately 60 hours - Accessories: 2 AA batteries, USB connection cable, strap - Color: Black - Compatible OS: Win/Mac Thank you for viewing. As shown in the photos, the box is damaged, but the contents are unused. Manufacturer's Suggested Retail Price (excluding tax): ¥52,800 Price at electronics retailers: ¥32,800 - ¥36,080