Come to have a look at this 3239 USB 2.4GHz Wireless Optical Mouse which is great to lat you enjoy computer without range limitation as the wired mouse. You will be shocked by the amazing wireless experience and wireless world. This wireless mouse features compact size， lightweight design and excellent hand feel. Flexible buttons ensure you to use effortlessly. The optical technology adoption guarantees the accurate response and ultra-smooth tracking. You will find its operation range will give you much convenience under some circumstances. Besides， it is workable， power-saving and environmentally friendly. It will fully give you every satisfaction!                                    Features             2.4GHz wireless technology<br> Maximum15m transmission distance <br> High sensitivity optical technology， free from mouse pad <br> High flexibility， accuracy and superior performance<br> Anti-skid scroll wheel and resolution frequency button (DPI)<br> Simple and fashionable appearance<br> Smooth and comfortable surface to grip<br> Ultra-long click lifespan of buttons <br> Ergonomic design is comfortable for long time use <br>                                                            Specifications             Interface     USB    <br> Optical Resolution     2000 DPI    <br> Battery Type     AAA Battery    <br> Dimensions     (4.41 x 2.72 x 1.46)" / (11.2 x 6.9 x 3.7)cm (L x W x H)    <br> Weight     2.01oz / 57g     <br> Power Supply     2 x AAA Batteries(not included)    <br> Supports System     Windows 7/ XP/ Vista    <br> Color     Blue    <br> Button     2 Buttons + 2 Page Up/ Down Buttons + 1 Scroll Wheel + 1 DPI    <br> Mouse Type     Wireless Optical Mouse    <br> Wireless Transmission Frequency     2.4 GHz    <br> Operating Distance     590.55" / 15m     <br>                                                             Package Includes            1 x Wireless Optical Mouse<br>1 x USB Receiver(Built-in)<br>