This ergonomic mouse is comfortable to hold and use.Wireless connection is achieved by the USB receiver.The DPI is adjustable among three gears, which can meet your daily office or gaming needs.It is an ideal companion for laptops in the home or office.Item Name: Wireless MouseMaterial: ABSDPI: 3-Gear Adjustable DPIWireless Transmission Distance: 0-10mOperating System: for Windows 98 SE/SME/2000/SXP/2003, for Mac OSBattery Capacity: 500mAh (Included)Wireless Transmission Frequency: 2.4GHz/2.4GHz + BluetoothFeatures: Wireless, Rechargeable, Ergonomic, SilentSize: 11.2cm x 5.8cm x 2.5cm/4.41" x 2.28" x 0.98" (Approx.)Notes:Both styles of wireless mouses are equipped with a USB receiver, which is plug and play. One of the two styles has bluetooth-compatible function and it can contact to a computer, a cell phone or a tablet by Bluetooth.Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Wireless Mouse1 x Receiver1 x Charging Cable