for enjoying wireless Bluetooth world， you can have a try of this 3240 Wireless Bluetooth Optical Mouse. Employing advanced Bluetooth technology， it will make your online communication and work more convenient and quick. Supporting Windows 7/XP/Vista， it is convenient and excellent to use. High technology and advanced design make it feature accurate response and ultra-smooth tracking. It is designed with Bluetooth chip and Bluetooth interface， and you can communicate with devices which have built-in Bluetooth in the range around you. It must give you every satisfaction!                                    Features             Support Bluetooth wireless transmission <br> Smooth and quick response buttons <br> Ergonomic and humanized design for comfortable operate<br> Low voltage is energy-saving<br> Make you enjoy wireless operation freely<br> Support Windows 7/XP/Vista， plug and play<br> The DPI can be adjusted  <br>                                                            Specifications             Interface     Bluetooth Wireless Transmission    <br> Optical Resolution     2000 DPI    <br> Battery Type     AAA Battery    <br> Dimensions     (4.57 x 2.8 x 1.54)" / (11.6 x 7.1 x 3.9)cm (L x W x H)    <br> Weight     2.29oz / 65g     <br> Power Supply     2 x AAA Batteries    <br> Supports System     Windows 7/ XP/ Vista    <br> Color     Gray    <br> Button     2 Buttons + 2 Page Up/ Down Buttons + 1 Scroll Wheel + 1 CPI    <br> Mouse Type     Bluetooth Optical Mouse    <br> Voltage     DC 3V    <br> Current     Min: 0.2mA; Max: 12mA    <br> Operating Distance     590.55" / 15m     <br>                                                             Package Includes            1 x Bluetooth Optical Mouse<br>