CK356B This wireless optical mouse with a host of great features lets you enjoy wireless free and is easy to operate， suitable for smart phones/ tablet/ iPhone series/ iPad series/ laptop etc. Rapoo 7600 2.4GHz Wireless Optical Mouse 2.4G Reliable Wireless Connection Multimedia Control Center Wireless Free 500/1000CPI Adjustable Resolution 2.4G Reliable Wireless Connection Rapoo 2.4GHz wireless technology provides up to 10m reliable connection without any interference and will not affect your healthy. High-precision Laser Tracking Engine 2.5 times higher compete with the traditional optical engine， 1000dpi high precision optical tracing engine provides more precise control. Adjustable Resolution You can switch the CPI between 500/1000CPI to get your favorite mouse resolution. Ergonomic Design Ergonomic comfort for either hand with the thumb grip pad design provides you perfect feel without tired even after a long time operation. Multimedia Control Center You can sit on the sofa use the mouse as a remote control comfortable to operate multimedia presentations and other digital entertainments. Plug and Play Smart Link Plug the nano receiver in the available USB port and all settings are launched in second. No Driver is required. You can enjoy the wireless free just in one second. Durable Battery Power Up to 3 months battery life reduce the trouble of your battery replacement. You can power off the mouse when not in use to prolong the battery life. Low Power Alarm Function Nano USB Receiver Plug the nano receiver in the available USB port and all settings are launched in second. No Driver is required. You can enjoy the wireless free just in one second. The low power indicator will flash when the battery need to replace. Generally， you can continue to use your mouse about a week. Brand  Rapoo Model  7600 Type Wireless Optical Mouse Maximum Acceleration 2G Maximum Tracking Speed 14 inch/s Control Method Left， right， forward， backward， CPI RF Channel 16 Channels Carrier Frequency 2402MHz - 2480 MHz Receiver Range 10m， 360° Maximum DPI 500-1000 CPI Working Current 15mA Working Voltage 1.5V USB Receiver Current 5V DC 30mA USB Port USB 1.1 Battery Configuration  * AA Battery (included) Operation System Required Windows XP， Windows Vista， Windows 7