The C7 is an older high-end serial mouse with three buttons and a rectangular shape. It appears to have been introduced in 1988.

The '88 Tandy "Computer Catalog & Software Reference Guide" listed this LogiMouse for $99.95 USD. It was available in two different versions; one had a 9-pin plug for connecting it to the computer, the other an old-style 25-pin plug. The catalog indicated that it is Microsoft compatible. It cost twice as much as Tandy's two-button mouse of the same type.

Despite its age, this unit should still work with most PC compatibles, although a PS/2 port adapter will be necessary for many.