Below you can see the front-view size comparison of the Panasonic ZS70 and Olympus E-M10 II. The Panasonic ZS70 is clearly the smaller of the two cameras. Its body is 8mm narrower, 16 mm shorter and 6 mm thinner than the Olympus E-M10 II.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.