JVC TH-BC3, 2.0 channels, 60 W, 83 dB, 4 Ω, 82 - 25000 Hz, iPhone, iPod JVC TH-BC3. Audio output channels: 2.0 channels, RMS rated power: 60 W, Sensitivity: 83 dB. Apple docking compatibility: iPhone, iPod. Product color: Black. Power source type: AC. Weight: 7.72 lbs (3.5 kg)