The phrase "main features" refers to the most important characteristics or qualities of something. It highlights the key aspects that distinguish it from others and summarize its notable elements. Full definition
The unit involves the following Completed facts and topics: • Water basics with few facts • Water cycle basics with main features of it. (tes.com)
The retailer describes the phone's main features in similar fashion, including camera, fingerprint sensor and AMOLED display. (bgr.com)
Aside from a few slight aesthetic changes, the two main features include the ability to +1 apps and password protect (PIN lock) your Android purchases. (cellphonesignal.com)