i.Sound ISOUND-1691 White Bluetooth Twist Speaker and Speakerphone Type: Bluetooth Car kit Noise Reduction: Yes Talk Time: Up to 5 hour(s) Music Time: Up to 5 hour(s) Operating Range: 30 Feet Bluetooth Profile: A2DP Battery: Rechargeable Lithium-ion battery Specifications: Output power: 2 x 3 Watts Diver Units: 1.5 x 2 = Passive Subwoofer (40x70mm)