G-Cube Crystal iBuds, Made with Crystallized swarvoski elements, comes with fully faceted xillion - cut Swarovski crystal. The Xilion is the brightest and latest innovation in the galaxy of Swarovski crystals, it's the New Generation of Brilliance.Enhanced Bass Driven Sound equipped with optimized 10mm dual layer film speaker to offer clear and crisp performance. Bass driven sound utilizing powerful neodymium magnetic to enhance your listening experience, constructed with durable metallic structure. Osygen free copper and tangle free cable, with cord length of 120cm. In-Ear design to block out noise, comes with extra pairs of earbud replacement, sizes S, M, and L. Speaker 10 mm Sensitvity 98 dB ± 2 dB at 1 KHz Impedance 32 Ω Frequency Response 20 Hz-20 KHz RMS 3 mW Plug Type 3.5 mm Cable Length 120 cm / 47 in. Weight 14 g Sleeves Size S, M, L