HP Roar Mini Bluetooth Speaker, White Ultra-portable: Fits most accessory pockets at a compact 3-inch by 3-inch size. Engineered for sound: An internal passive radiator enhances a fuller bass Portable: Cable free with up to 30 feet Bluetooth connectivity. Powered to perform: The rechargeable battery lasts up to 28 hours. New sound shaping software with a unique triangular design delivers enhanced audio sound. 3.1 x 3.1 x 2.8 inches Convenient speakerphone functionality Noise cancellation for clear calls