hi, i just tested this wired mouse, Microsoft Optical Mouse 200, price is very cheap, it's using avago sensor, model unknown, can confirm it doesnt have prediction.

should be a good replacement for microsoft wheel mouse optical, depend on user opinions.

according to microsoft specs,

http://www.microsoft.com/hardware/en-gb/p/opt.../JUD-00007

http://download.microsoft.com/download/2/5/4/...00_OEM.pdf

Tracking Technology

Mouse Tracking System
Microsoft-proprietary optical technology

X-Y Resolution
1000 points per inch (39.4 points per millimeter)

Imagine Rate
4000 frames per second

Tracking Speed
Up to 30 inches (762 millimeters) per second


Product Dimensions

Mouse Length
4.16 inches (106 millimeters)

Mouse Width
2.21 inches (56.0 millimeters)

Mouse Depth/Height
1.41 inches (35.7 millimeters)

Mouse Weight
2.80 ounces (80 grams) includes 2 AAA alkaline battery; typical battery weight may vary

Mouse Cable Length
72 inches (1828 millimeters) Compatibility and

it's a wired mouse, so the battery info was wrong.

size is abit smaller than normal mouse, but bigger than notebook size mouse, so still a mouse to fit a hand, unless user got a very big hand.

that's about it, hope for other user opinions/reviews.