Product Features & Specifications : - 2.4Ghz wireless connection with a USB receiver - USB receiver stored inside the mouse and carrying easily - USB plug and play, no driver installation required - Intelligent invisible sensor light design for power saving - Powered by 2pc of AAA battery, up to 6 months battery life - On and off switch : yes - Resolution : 1200dpi - Working distance : 10 meter - Dimension : 100x60x35mm - System requirements : support windows 98/2000/2003/XP/VISTA/7/8/8.1/10