Overview:-100% Brand new & high quality USB (Universal Serial Bus) PC remote control -Easy to use, slim & easy portable -Product Decription:-This product is compliance with the ergonomic, feeling very comfortable.-Receiver throught USB (Universal Serial Bus) interface connect with computer, plug & play, use windows own software, no need to install other driver.-Working distance:10M (Depend on user's environment).-Work degree: 45 degrees (angle)-Operation System: Windows 2000, XP, 7, MCE2005, Vista.-Use battery type:button cell battery (Lithium Cr 2025). Package Contents:1 USB (Universal Serial Bus) infrared Receiver 1 User's Manual 1 USB (Universal Serial Bus) extension cable Specification: Weight Approx:100g Size Approx:13 x 11 x 5