the length in macro mode is 107.2mm (measured at my copy, Olympus OM-mount)
the weight is 415gr. (measured at my copy, Olympus OM-mount)
This Zoom has a "close focus" function at 75mm focal length. That means: by zooming to f75mm and setting to ∞ you can unlock the lens to macro mode. Than you can turn down the closest focusing distance to 0.63m. The imaging scale than is 1:8 at full frame camera, 1:13 at APS-C.