Measuring 3.3 by 2.8 inches (HD) and weighing in at 8 ounces, the cylindrical Soundcore Mini 3 has an eggshell-like exterior and is available only in black. The top-firing 6-watt driver is complemented by a down-firing passive radiator, which adds a sense of bass depth to the sound signature. The speaker's base is rubberized to prevent it from dancing across flat surfaces and it seems to have a mild suction-like ability on some surfaces; this property may create vibrations that affect the sonics a bit, however. A built-in strap lets you hang the speaker to avoid that potential issue.
 
Around the outer panel and just above the base are buttons for power, volume, and Bluetooth pairing, as well as a multifunction control that handles playback, track navigation, call management, and voice assistants depending on how many times you tap it. Also along the base is a covered USB-C port for charging; Anker includes a USB-C-to-USB-A charging cable in the box. 
 
The Soundcore Mini 3’s IPX7 rating means that it's fully waterproof, so you can expose it to splashes, rinse it off under a faucet, and even submerge it in up to a meter of water. Bluetooth signals don’t work underwater, but the Soundcore Mini 3 is otherwise an ideal option for outdoor environments and can stand up to wet weather or poolside splashes.