i.Sound ISOUND-1693 Red Bluetooth Twist Speaker and Speakerphone Type: Bluetooth Car kit Noise Reduction: Yes 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) Compatibility: iPhone 5, iPad, iPhone, iPod, Smartphones, Tablets, MP3 Players, and other 3.5mm audio devices not included