The Onyx Mini is a Bluetooth speaker with a plain design capable of stream-ing music from compatible devices. Thanks to its integrated rechargeable battery, the user can enjoy music wirelessly for up to ten hours. The built-in echo and noise cancelling system delivers crystal-clear voice quality over the speaker during phone calls. Moreover, it can be connected with other Onyx Mini speakers or other Harman Kardon-compatible devices for an enhanced sound experience.