Bluetooth Version: Bluetooth 2.1 + EDR. Phone cradle. 5 EQ modes. Working Distance: Up to 10M. Connectivity: Bluetooth, FM Radio, Micro SD (TF), USB, AUX input. Compatibility: All Bluetooth audio devices, device with 3.5mm audio jack. Speaker output: 1.7W RMS x 2- 3w RMS x2. BASS Power: 3W RMS- 5W. Frequency Response: 20Hz – 20KHz. Battery: 3.7V/2000mAh. Card reader: Micro SD (TF), USB (flash drive) up to 32GB max. Power Source: USB (DC 5V, 2000mAh Built-in battery). Charging Time: 2-3 hours. Playing Time: 4-5 hours depending on Volume and Bass level. Package Contents: 1 x Speaker. 1 x Micro USB Cable. 1 x AUX Cable. 1 x Remote Control. Product Dimension: 14.9cm (l) x 13.6cm (w) x 41.2cm (h) - Avail in: Black