Features

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General
Model Name X3500  M220 Silent  WM126  WM118
System Requirements Windows: XP, Vista, 7,8  Windows RT, Windows 7, Windows 8, Windows 10 or Later, MaView More... Windows:, XP, Vista, 7.8  Windows XP, Windows Vista, Free-DOS, Windows Server 2012, View More...
Sales Package Mouse, Nano Receiver, 1 AA Battery (Pre-installed), User View More... 1 mouse, 1 usb  1 Mouse, USB Receiver
Color Grey  Black  Black
Controls 2  3 
Part Number H4K65AA#ACJ  910-004885 
Compatible Devices Laptop, PC 
Resolution 1000 DPI  1000
Technology Used Sensor Technology: Logitech Advanced Optical Tracking 
Connectivity and Power Features
Bluetooth No  No  No
Power Source 2 x AA Batteries  Battery 
Number of Batteries 1  1
Battery Type AA Battery  AA
Effective Range 10 m  10 m
Battery Life 18 Months  8760
Other Features Buttons: 3 (Left, Right, Wheel)
Wireless Frequency 2.4 GHz 
Surface Tracking Yes
Dimensions
Width 60 mm  6.3 cm
Height 99 mm  3.44 cm
Depth 39 mm 
Weight 95 g  75.2 g  82 g
Other Dimensions Nano Receiver Dimension (H x W x D): 14.4 x 18.7 x 6.1 mmView More... 17.3 x 15.2 x 9.7 cm 
Warranty
Domestic Warranty 1 Year
Warranty Summary 1 Year Domestic Warranty  3 Years Limited Hardware Warranty  1 Year Warranty  1-year Limited Hardware Warranty
Warranty Service Type Limited 
Covered in Warranty MANUFACTURING DEFECTS 
Not Covered in Warranty Physical Damage