To make your Presentation flow continuously, the Powers enter integrates the slide up/down function with a laser pointer on a remote handheld device using a wireless technology, mobility up to 25 meters from the laptop/PCwhile still maintaining a full navigational control of your presentation.The Powers enter does not require any software and PC programming and take just a few seconds to install and use.Features:- Plug and play- Working on any computer,no PC programming- Using a USB port- Remote control range over 25m with a very low powerSpecification:- transmitter & receiver :Radio freq 315 MHz (USA,Asia),- 433.92MHz(Europe)- Laser module wavelenght:650nm (class II)- Interface receiver USB HID spec.Vert1.1 ver 2.0- Suported OS Win 98,SE, ME,2000,XP- Battery transmitter Alkaline 12V (gp A23),- Receiver USB Bus-powered- Operating current transmitter15mA, receiver 10-12mA- Dimension transmitter 115mm (L) x 18mm(H) x 19mm(W)- Dimension receiver 96mm(L) x 11mm(H) x 23mm(W)- Weight transmitter 20g , receiver 15g- Enclosure Molded Plastic