a plethora of Apple Watch functionalities that you might not even be aware of, in addition to capabilities that could be unknown to you. One feature that may confuse you is the apertures located on the side of the Apple Watch. Depending on your technical expertise, you might glance at those apertures and initially think they are some type of reset switch or possibly a spot for a SIM card tray on the device.
Nevertheless, Apple clarifies that the Apple Watch lacks a physical reset button or a SIM card slot. The purpose of the hole is actually threefold. Firstly, in all models of the Apple Watch, that particular hole houses the speaker and microphones of the device. This functionality enables you to receive calls, interact with Siri on your Apple Watch, and even record audio.
Some microphones are also capable of detecting sounds that are excessively loud, which is one of the health-related features of the Apple Watch. Additionally, the hole serves a third purpose on certain models of the Apple Watch. For newer models equipped with water resistance, the hole is utilized to assist in gauging the water depth surrounding you.