HomePod mini looks similar to the standard HomePod, adopting the same mesh-covered "acoustically transparent fabric" design. Rather than a cylindrical body, HomePod mini has a more rounded, bulbous body with a display at the top that offers physical controls and a Siri wave form.
HomePod mini measures in at 3.3 inches tall and 3.9 inches wide, and it weighs 0.76 pounds, so it's small enough to fit just about anywhere. There's a silicone base at the bottom of the HomePod mini that keeps it in place, and Apple says that the HomePod mini won't leave white rings on furniture like the standard HomePod can do.
HomePod mini is powered by a non-detachable power cable that has a USB-C connector at the end, which is designed to work with an included 20W power adapter. Because the HomePod mini features a USB-C connector instead of a plug like the HomePod, it can potentially be powered by a battery pack.
The HomePod mini is meant to work with Apple's 20W power adapter, but after the HomePod 14.3 software, it is also compatible with some 18W charger options from third-party manufacturers.
Siri is a key part of the HomePod mini, with most music playback controlled through Siri commands. Siri is able to make music recommendations based on personal tastes, aiding in music discovery, and the assistant can keep track of what each user likes.
