In my opinion, one of the best features of any mobile accessory is versatility. I spend a lot of time on the go during the day, and do a fair amount of travelling for work, so earning a place in my gear bag is a badge of honor, and it usually requires a certain measure of versatility. The more bases a device or accessory can cover, the better the chance that it holds a spot there.
In the past, versatility was a given with headphones and earbuds. You plugged them into a jack and they just worked. With Bluetooth headphones, there came more freedom of movement, but with the conditions of only being compatible with certain devices and limited battery life. Now, iOS users are faced with even more complications with the removal of the iPhone’s headphone jack going forward, with several other smartphone manufacturers now making the same move right behind them. If you own both an iPhone 7 or 7 Plus and an iPad, complications with earbuds or headphones will ensue.