Welcome to our store！</br> 1、Wireless: 2 4GHz wireless transmission technology, strong performance and stability, 10 meters wireless transmission distance. 2、Three Kinds of DPI Adjustable: 1200/1600/2400 DPI, wireless optical engine, precise positioning. 3、Intelligent Power Saving: The built in low power timer will switch to the energy saving sleep mode if it is not moving for 5 minutes, move or click the mouse button to wake it up. 4、Ergonomic Design: Comfortable grip, long term use will not fatigue, making work easier. 5、Appearance Design: Stylish and exquisite design, stylish appearance and portable use. <p class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text"> Item Type:&nbsp;Wireless&nbsp;Mouse Material: ABS Model: G838 Wireless Distance: Approx. 10m / 10.9yd Work: Optoelectronics Resolution: 1200/1600/2400 DPI Operation Mode: Photoelectric Rated Voltage/current: 1.5V / 7mA Battery: 2 x AAA Battery (Battery not Included) System Requirements: for&nbsp;Windows 98 / Me / 2000 / Xp / Vista / Win 7 / Win8 / 10 / Vista&nbsp;OS or New Version. <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Mouse 1 x USB Receiver Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>