There is an interesting trend in the world of headphones. When we had bulky Walkmans and Discmans around our waists, we were used to earphones. With the shrinking of music players, however, the scale has tipped to the side of headphones. Today, both these types are in 'hot water', as are mountain and road cycling. Beats vs. Earin. The former require a weapon license, while the Earins can be smuggled anywhere.