Perixx PERIMICE-710B, 2.4GHz wireless mouse with high quality 1000 dpi and 1600 adjustable - Nano Receiver - 2 AAA batteries included Energizer - Black (Accessory)
Do not attempt to adjust the pointer speed or use the center button while it is not active. Just good occasionally, it is in my bag to troubleshoot the move, the primary mouse logitech excellent (much more expensive) remains connected to the office on my docking station. Overall it's ok 2nd occasional mouse