Experience superior sound quality through the powerful built-in speaker giving depth and clarity to your music. Designed with an innovative Bass Expansion System for an impressive volume-to-size digital amplifier giving you deep, rich bass tones. Simply twist and release to activate an enhanced entertainment experience. All BassBoomz? come with a built-in high performance Li-ion rechargeable battery, so you can hear your music at 70% volume for an amazing 5-6 hours. The solid aluminium construction with high grip base provides stability, reduced interference and vibration dampening when used on hard surfaces. All this impressive design and technology is packed into a portable, pocket-sized high performance Bluetooth speaker for music on the go. The BassBoomz? also supports all devices connection through a 3.5mm audio jack. New other (see details): A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with no defects.