Concerning this item With optimal audio settings, this ultra-portable Bluetooth speaker can be clipped and played anywhere for up to ten hours. Featuring a new design with an integrated carabiner to clip on or buckle anywhere, the JBL Pro Sound boasts a punchy bass and an IP67 rated water and dustproof speaker with Bluetooth 5.1 capabilities for wireless streaming from your phone, tablet, or any other Bluetooth-enabled device via USB type-C charging. Three hours are needed for charging.