BackBeat Plus Mobile Noise-isolating earphones with microphone delivers powerful deep base and stunning audio free from distortion and the distraction of outside noises. It has a comfortable inEar SnugFit and 10mm Neodymium speakers for exceptional audio balance and enhanced bass. Includes 6-piece fit kit with multiple silicone ear tips (S, M, L) and a 3.5mm gold-plated audio connector. With crystal-clear sound and passive noise reduction BackBeat is functional and stylish with a design that works well with any 3.5mm audio device.