Features 1Dual Mode: This wireless mouse supports BT or USB wireless connection, simply connected with BT on your device or plug in USB receiver, offering more convenience. 2Silent Design: This office mouse features silent design, making you concentrate on your work in long time tiring work without disturbing others in dormitory and office. 3Optical Sensor Detection: This laptop mouse features optical sensor detection system which allows you to move the cursor more accurately and sensitively. 4Widely Compatible: This laptop mouse is suitable for OS X Laptop, for Win operating system, ideal for desktop, laptop and tablet, meeting your needs for different devices. 5Plug and Play: This girl mouse is plug and play, drivers are not required. The simple style and compact structure ensures portability, easily fit into your bag and backpack. Specification Item Type: Wireless Mouse Material: ABS Battery: 1 x AA Battery (Battery Not Included) BT: With BT Function Purpose: BT or USB Receiver Mode Package List 1 x Wireless Mouse 1 x USB Receiver 1 x User Manual