Autentik IPX 4 Bluetooth Speaker with FM Radio Memory Card Slot The autentik Bluetooth speaker produces clear vocals and enhanced bass crisp, dynamic sound. Small and compact, the speaker can be used anywhere and is loud enough to make any music sound sensational. With a special rotary knob to adjust the volume, a push-type on/off switch control the autentik Bluetooth speaker. It also has a built-in micro-USB, aux connector, FM radio, and a slot for a memory card. The IPX4-rated design allows the speaker to be used around the pool, or other wet environments, without the need to keep a Smartphone close. With an anodized metal and cloth mesh finish, the autentik Bluetooth speaker stands out as a quality product with a modern premium finish Compatible with most smartphones, tablets, portable music players, laptops and computers.