... iPod, iPhone, iPad, smartphones, MP3/MP4 Feature 1/Portable, Mini Hamburger 2/ Dynamic internal magnetic 3/ USB Power 4/ Audio Line ... Currency Rated Impedance): 3.2Ω± 5% Feature 1/Portable, Mini Hamburger 2/ Dynamic internal magnetic 3/ USB Power 4/ Audio Line ... 10/ DCR(Direct Currency Rated Impedance): 3.2Ω± 5% mini hamburger speaker 35B