Features:Portable and space-saving: Skillfully combines transmitter and USB receiver in the small-size one-piece laser pen.Compact and lightweight: This remote fits naturally into your palm, allowing you to control presentations with ease.Easy installation: It is USB plug-and-play. No driver required.Control PowerPoint wirelessly: Page up and down, slide play and blank screen.Integrated Laser Pointer: Focus your audience's attention on key areas of your slides.Adopts the RF wireless technology: Ensures long control distance which can reach 15m and no direction limit when using it.USB receiver is compatible with Windows 98, Se, Me, 2000, XP, Windows vista, Mac OS, Linus.Perfect for teachers, students, engineers, doctors, managers and more.Specifications:Transmitter:Radio frequency: 433MHzControl distance: Approx. 15mLaser distance: !#!gt!*! 200mWavelength: 650nmWork voltage: 1.5VBattery power: 1 * AAA battery (Not included)Color: BlackDimension: 140 * 22.7 * 22.7mm / 5.5 * 0.9 * 0.9in (L * W * H)Net weight: 15g / 0.5ozUSB Receiver:Power: 4.5-5.5VColor: BlackDimension: 58 * 17 * 12mm / 2.3 * 0.7 * 0.5in (L * W * H)Net weight: 5g / 0.2ozPackage dimension: 157 * 83 * 36mm / 6.2 * 3.3 * 1.4inPackage weight: 110g / 3.9ozNote:Laser beam can cause permanent damage to eyes, so please don't point it to people.Don't allow minors to use the laser pointer unsupervised.Package List:1 * Transmitter1 * USB Receiver1 * Case1 * User Manual (English)