Astrum Slim Clear Sound Bluetooth Speaker - Black Ultra slim bluetooth wireless speaker with powerful bass and clear sound, quality leather outer cover for style. Features - Powerful bass and clear sound - Dual speaker with total 10W RMS - High quality sound in an elegant design - Bluetooth connection for maximal flexiblity - Ultra slim speaker easily portable with lanyard - Rechargable battery for upto 4 hours of music Specifications: - Bluetooth: V4.0 - Range: 10m - Frequency: 180Hz- 18Khz - Speaker Unit: 2 x 5W RMS - Output: 3.5mm Jack + USB power - Power: 5V micro USB - Play Time: Plays upto 4 hours - Color: Black - Product Weight: 450g (Approx) - Dimension: 124 x 47 x 20 mm (L x W x H) - Package Content: Multimedia Speaker