LENOVO Essential Compact Wireless Mouse 80008028 4Y50R20864 Product Description: Lenovo Essential Compact - mouse - 2.4 GHz - black Device Type: Mouse Connectivity Technology: Wireless - 2.4 GHz Colour: Black Orientation: Right and left-handed Dimensions (WxDxH): 5.6 cm x 9.8 cm x 3.2 cm Weight: 50 g Wireless Receiver: USB wireless receiver Buttons Qty: 3 Movement Resolution: 1000 dpi Features: Scrolling wheels (2-way), Nano wireless receiver Battery: AA type Package Type: OEM Manufacturer Warranty: 1-year warranty