Veo que hay 2 modelos de Piston 3
http://www.nextbuying.com/original-new-xiaomi-piston-black-earphone-p000326.html
http://www.nextbuying.com/original-xiaomi-piston-3-youth-3-5mm-in-ear-earbud-headphone-p000339.html
Diferencias fundamentales?Cúal os estáis comprando?