Item Type: 2.4GHz Wireless Mouse Material: ABS Colour: Black Scope of Application:For Computer Connection Method: 2.4G DPI: 1600 (Maximum) Built in Battery: Polymer Lithium ion Battery Battery Capacity: 500mah Compatible System:For Windows 98 / Me / 2000 / XP / Vista,for Win 7,for Win8 / 10,for OS X Backlight: Colorful Backlight 1、Long Distance Connection: Silent mouse uses 4GHz wireless technology to provide a strong and reliable connection with an effective range of up to 10 meters. 2、Long Standby Time: The lithium ion battery of rechargeable mouse has a large capacity of 500mAh, which can play for 5‑7 days on a single charge, and has a long standby time. 3、Quiet Design: The wireless mouse is designed with noiseless keys, so it won't disturb your family even when they're working on a break. 4、Adjustable DPI: The 4GHz wireless mouse has 3 levels adjustable DPI, 800/1200/1600 DPI, and advanced optical tracking technology for fast click and responsiveness. 5、Plug and Play: Silent mouse wireless doesn't need to install any drivers, just plug the USB receiver into your laptop and the mouse will work.