With the unibody design, the wireless receiver for the presenter pointer can be inserted to the pointer, which is more portable to carry and avoiding getting lost. Connect the 2.4GHz receiver to the computer and you are free to control the PowerPoint by this tiny laser presenter in your hand wirelessly. Ideal tool for teachers and office use. Features Unibody design, the receiver can be inserted into the clicker. Latest 2.4GHz wireless technology provides low power consumption. One wireless presenter can control multiple computers with multiple receivers. 5mw low power laser light, safe guaranteed. Multiple operation system supported, including Windows and Mac OS. No need for extra drivers or software, plug and play. Powered by one AAA battery, ultra long standby time. Specification Type Wireless presenter Model L890 Wireless Frequency 2.4GHz Laser Color Red Laser Power ≤5mw(class III) Remote Range 20m Working Voltage 1.5V Power 1 x AAA battery (not included) System Supported Windows XP/2000/Vista, Win7, Mac OS 10.4 and later USB USB 1.1, supports USB 2.0 and USB 3.0 Pointer Size 132 x 18 x 18mm Pointer Weight 17g Receiver Size 19 x 15 x 16mm Receiver Weight 2g Package Contents 1 x Wireless Pointer, 1 x Wireless Receiver, 1 x Manual, 1 x Guarantee Card