Antec NOTE Purple Portable Bluetooth Speaker with Smart Lid Type: Bluetooth Portable Speaker Bluetooth Version: 4.0 Battery: 1000 mAh Specifications: Output power: 3W Frequency response: 90Hz~20kHz Impedance: 4OHM Sensitivity: 80dB +/- 2dB Input power: USB 5V/lithium battery Dimensions: 6.2 x 2.3 x 1.2 Weight: 0.5 lbs.