GEMBIRD MUSW-4B-01 Gembird Wireless opti 80014283 Product Description: Gembird MUSW-4B-01 - mouse - 2.4 GHz - black Device Type: Mouse Connectivity Technology: Wireless - 2.4 GHz Colour: Black Dimensions (WxDxH): 6.5 cm x 11.5 cm x 3 cm Weight: 61.5 g Wireless Receiver: Nano USB wireless receiver Movement Detection Technology: Optical Buttons Qty: 4 Movement Resolution: 1600 dpi Performance: Realtime sensitivity switching 800/1200/1600 dpi Battery: AA type OS Required: Microsoft Windows 7 / 8 / 10 Package Type: Blister