Philips DS7510/12, 2.0 channels, 10 W, iPhone, iPod, Neodymium, Digital, AC, Battery Philips DS7510/12. Audio output channels: 2.0 channels, RMS rated power: 10 W. Apple docking compatibility: iPhone, iPod. Magnet type: Neodymium, Volume control: Digital. Power source type: AC, Battery, Battery life (max): 8 h, AC input frequency: 50 - 60 Hz. Battery technology: Alkaline