Rechargeable wireless mini speaker (Bluetooth version 3.0) in metal housing, with excellent sound quality. Frequency: 200Hz-20Khz. Power 3W. Easy to operate and suitable for the most popular mobile devices and tablets. Also suitable for SD cards. Incl. USB / Audio cable (approx. 51 cm) with standard 3.5 mm plug, rechargeable battery and instructions. Each piece in a box.