This 2.4 GHz Wireless Presenter Red Laser Pointer is portable. An essential nice assistant of demonstrations or presentations, you can easily point to the PPT or blackboard in any corner of classroom,conference etc up to 10 meters away, making your demonstrations or presentation more dynamic and makes listeners feel release. This laser pointer is also the best gift for friends and families. No hassle setup, simply plug into your computer's USB port USB receiver is plug and play - no driver required Power saving, lightweight. This high quality laser pointer adopts the latest technology green laser optics and microelectronics Specifications: Supports MS Word, excel, PowerPoint, ACD See, website etc, with page up and down function Light Style: Beam light 5MW Power Supply: 1 x AAA battery Switch: Button Operating System: USB interface and Microsoft Windos / XP Size: 10.5 x 3.9 x 2.6 cm Package weight: 39 g Color: Black