The Bose SoundLink Micro is 9.5cm square, 3.8cm deep and weighs 290g.
It's designed to be part of an active life, exceeding the waterproofing requirements of IPX7 ("made and tested to withstand soapy water, chlorinated water, and salt water") and sporting a damage-resistant silicone exterior.
"No other Bluetooth speaker this small sounds this good – so you'll never want to leave it behind. And it's been built for just about anything, so you'll never have to," said Bose on-the-go products director Brian Maguire.
The SoundLink Micro also works as a hands-free device (including the use of Siri or Google Assistant), and uses voice prompts for Bluetooth pairing.
The Bose Connect app allows the SoundLink Micro to be used another SoundLink speaker in a stereo pair, or to play the same music simultaneously through multiple speakers.
Available from 22 September, the $169.95 SoundLink Micro comes in black, blue or orange. Pre-orders are being accepted here.