The case is processed wertig, has a comfortable grip and a lot of knobs and dials for all conceivable functions. Olympus typically can also be the E-M10 totally individualized. It has two Fn buttons and dials that you can prove with any functions (ISO, aperture, shutter speed, MF, Focus Peaking, etc., etc..).
The camera features an electronic viewfinder with 1,4MP which, although large enough delay and bright, but not to the Nikon V1 approach comes from the sharpness and clarity. The LCD back is a touch screen that can be tilted up and down, which can be very useful in macro and when shooting over crowds. Using the touch screen can be shifted as well to focus with a touch on a point and trigger immediately both the AF. You can scroll through captured images with this course. ;)
The sensor is the same as in the E-M5, so it is a very good 16MP sensor but instead a 5-axis 3-axis has image stabilizer. To be honest, I've noticed no difference to other in-body- and lens stabilizers. He just works beautifully even with fixed focal lengths and old manual lenses. The AF is really really fast, even with very low light (eg ISO12800, F1.4 and 1/50 sec.). Only when tracking (sports and action photography), he does not come close to the AF phase of a good DSLR, otherwise it can be compared quickly and accurately.
On the remaining features like WiFi, Focus Peaking, Livebulb, bracketing, RAW development in camera type filters, etc. I do not want to go into, because other reviewers have adequately addressed these. I just want to say that all these features work as advertised, and depending on the situation and the personal preference very useful or not, may be. Personally, I could easily do without WiFi, Video and Art Filters. But who knows, maybe I change with time diesbzgl. my opinion.
Conclusion: The decision by Olympus to save the splash protection, install a less advanced in-body stabilization (a difference but you can not find in practice), but otherwise maintain all the features of the E-M5 and deliver the camera significantly cheaper than the 5 Series, I can only welcome. The E-M10 is mMn beside the A6000, the mirrorless system camera with the current best price / performance ratio. This camera, I would definitely buy again.
