Ergonomic design makes the wireless mouse comfortable to use.Silent click operation causes no disturbance to your family.Professional optical engine provides rapid image processing, precise positioning and stable movement.Intelligent sleep operation causes low power consumption.Mini compact size makes it easy to carry.Item Name: Wireless MouseMaterial: ABSBattery Capacity for Rechargeable Version and bluetooth-compatible Version: 300mAh (Included)Battery for Battery Type: AA Battery (Not Included)Number of Buttons: 4Wireless Transmission Frequency: 2.4GHzTransmission Space: 10mInterface: USBResolution: 1600DPI (Adjustable)Features: Wireless, Portable, Computer AccessorySize: 10.4cm x 6.6cm x 3.8cm/4.09" x 2.6" x 1.5" (Approx.)Notes: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 Mouse