Feature: 1. Dual Connection Mode: With BT and 2.4G intelligent connection mode, the mouse provides more stable and reliable transmission and it can be compatible wider devices. 2. 3 Adjustable DPI: Default 3 DPI levels available from 800/1200/1600DPI. You can adjust the DPI with DPI button to get high accuracy and consistent responsiveness at any speed. 3. Mute Operation: Noiseless click lets you can focus on your working without worrying about disturbing others. 4. Large Capacity Battery: Built in 500mAh large capacity lithium battery, it has a battery life of up to 60 days for one charge. 5. Colorful Backlight: Equipped with colorful backlight effects to add different colors to your desktop. 6. Ergonomic Design: With ergonomic design of surface modeling, the mouse is more comfortable and easy to operate. 7. Applicable system: Windows98 / 2000 / XP / Vista / win 7 / win 8 / win 10 / Mac OS 8.Slim and Portable Design: Perfect for Travelling carry which means it can be easily put into your laptop bag and ultra-space saving. 9.Technology provides precise, smart cursor control over many surface types. Technology – after pairing theres no need to re-establish pairing after a signal loss or shutdown. Plug & play - no need to install a driver. Specification: Item type: Wireless Mouse Color: Matte Black Connection mode: BT+2.4GHz Wireless distance: 10m DPI: 800-1200-1600 Applicable system: Windows98 / 2000 / XP / Vista / win 7 / win 8 / win 10 / Mac OS Size: 112 x 58 x 25mm Weight: 90g Package included: 1 x Mouse 1 x 2.4G Receiver