This is Harman Kardon Onyx Studio 9 Portable Bluetooth Speaker.
It features Constant Sound Field technology and a three-channel system for a wider, more immersive soundstage with clear vocals.
The speaker has a clean, circular design with an integrated aluminum frame that serves as both a handle and stand.
It pairs seamlessly with up to two mobile devices simultaneously, allowing for shared playlists.
You can connect two or more Onyx Studio 9 speakers using Auracast for a personalized, immersive sound experience.
It has a built-in rechargeable battery offering up to 8 hours of battery life.