Product details Easy to use, just plug into the USB port of your computer. USB receiver, no need to install drivers and requires no software or PC programming, it only takes a few seconds to install and use. save energy, lightweight, easy to carry. Just plug and play, no PC and S / W programming; transmitter identification: use thousands of identification numbers to avoid multi-user interference. The attractive and compact design of the power user also allows mobility up to 15 meters from the laptop / PC while maintaining full guided control for presentations. Supports MS Word, Excel, PowerPoint, ACD See, website, etc., with the page function up and down. presentations up to 15 meters. It is small and exquisite, portable and with richer applications. A nice assistant essential to demonstrations or presentations, you can easily point to the PPT or the blackboard in any corner of the classroom. This laser pointer is also the best gift for friends and families. Size of the package: 17.2x12.8x2.6 cm Characteristics of the object: RF Frequency: 433.92 MHz (Europe) Wavelength: 650nm output power: 1mW Interface: USB HID, Ver.1.1 Ver.2.0 OS Supported: Win98 / SE / ME / 2000 / XP Supported S / W: MS Office Battery: Alkaline, 12 V, operating current powered by USB bus: transmitter, 15mA; receiver, size 10 ~ 12mA: transmitter, 130mm (L) * 18mm (H) * 19mm (W); receiver, 65mm (L) * 7mm (H) * 2mm (W) weight: transmitter, 20g; Receiver, Case 10g: Molded Plastic Note: AAA battery not included! Package Included: 1 x wireless presenter remote 1 x USB receiver 1 x Bag