Apple has a strange relationship with capital letters. Most of its products start with a lower case letter I, but then throw in a capital letter later in in the name, such as iPhones, iMacs, and iPads. For some reason, the HomePod mini has a capital P in the middle of homepod, but a lower case M for mini, just like the iPad mini. The Apple Watch, however, is firmly in the 'start every word with a capital letter camp'.