TTPOD T1 High Fidelity Definition Dual Dynamic Professional In-ear Earphone Black Turbo technology ,two N50 high-magnetic flux magnets supply more energy , enrich the details, Germany imported bio-polymer nano-diaphragm , clear sound High-quality synthetic material housing , lightweight shell , high-strength and durable , comfortable to wear The difference between the right and the left channal is less than 1db .its reach to international top earphone quality standard Cool and smooth curve modeling. Three kinds of music stytel silicone eartips . Dual dynamic ,senstive and responsive