has four teflon feet, which should provide less drag, hence smoother sliding than the case material of my on mouse. You may think that the reason I said "should" was that any difference would likely be too small to reliably test by feel. That may or may not be so. I wouldn't know since three of the feet of my regular mouse are worn to invisibility, and the fourth is fading fast (Mike can expect extreme difficulty prying this test unit away from me!!!). I cannot say technically, but I would expect the teflon feet to last at least as long as the old case feet due to the diminished friction wear.
The receiver has a "tail" which connects to the mouse port. The connector is a Mac Plus type, 8 pin "D" connector. The unit comes with an ADB adaptor to connect it to the SE or Mac II. The receiver itself is rather small, about 2 1/2 x 2 x 1 inches
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(I spared you the metric conversion that time). There is a red LED on its front which blinks when the mouse is moved to show it is working. The manual says the Cordless Mouse can be operated five feet from the receiver, and at an angle of 45 degrees to the right or left. It has a silicon rubber coated ball which can be removed for cleaning in the normal way.
To complete the specifications, the manual states the Cordless Mouse features an 8 bit, 12 MHz CMOS CPU, with "high" resolution of 200 cpi. It cites the tracking speed as up to 600 mm/sec. Although I did make a few efforts, I was not able to find the "old" mouse specifications to compare them. So, the