LCD and Viewfinder
Olympus E-PM1 has a Fixed Type 3" LCD screen with a resolution of 460k dots. Both the screen size and the screen resolution is up to the standards of this class.
E-PM1 doesn't have a built-in viewfinder but an optional external viewfinder is available. Lack of a viewfinder can be problematic especially under strong light where visibility of LCD screens goes down dramatically. If you need a Mirrorless camera with a built-in viewfinder in a similar price range, consider Fujifilm X-T200 (Compare) or Olympus OM-D E-M5 II (Compare). If the price is not an issue, take a look at our Top Rated Cameras with Viewfinders.
Max Shutter speed
Olympus E-PM1 can shoot continuously at max speed of 6 fps
and has max shutter speed of 1/4000 sec
Unfortunately E-PM1 doesn't have a built-in flash but it has a flash shoe for mounting external flashes and Olympus also includes a small external flash with the E-PM1 that you can mount on when you need.
Olympus E-PM1 features a Contrast Detection autofocusing system. The AF system has 35 points to choose from. Olympus E-PM1 also features Face detection AF
where it intelligently detects the faces in the frame and locks the focus automatically.
With Olympus E-PM1, you can record your videos at a highest resolution of 1920 x 1080 at 60 fps and save in AVCHD and Motion JPEG formats. Full HD resolution of Olympus E-PM1 will be adequate in most of the situations. But if you are after the highest resolution videos available, see our list of Top Cameras with 4K (Ultra-HD) Video
E-PM1 has a built-in Stereo microphone but no speaker.
Olympus E-PM1 doesn't have any connections for external microphones and headphones. If you need a Mirrorless camera with external microphone connectivity, consider Fujifilm X-T200 or Olympus OM-D E-M5 II in a similar price range.
Connectivity and Storage
You can connect E-PM1 to compatible devices via its HDMI port or USB 2.0 (480 Mbit/sec) port.
Olympus E-PM1 is powered by battery which provides a shooting life of 330 according to CIPA standards.
Considering that the average battery life of Mirrorless type cameras is 364 shots, its battery life is about average in its class but it would still be wise to invest in some spare batteries for long photo trips.
Battery Life Comparison in Entry-Level Mirrorless Cameras
Samsung NX mini with its 650shots is the model with longest battery life among Entry-Level Mirrorless cameras. Check the comparison of Olympus E-PM1 vs Samsung NX mini or take a look at Longest Battery Life Mirrorless cameras list.
Olympus E-PM1 Features Compared to Main Competitors