Beats has officially introduced its first sub-$100 wireless earbuds, the Beats Solo Buds, in concert with the launch of the new Beats Solo 4 headphones. The

Apple's audio brand Beats has just given its best-selling model - the Solo headphone series - a major upgrade. The highlights of the fourth-gen Beats Solo: They can now handle 3D audio, they have a longer battery life and they work better with Android smartphones.

Beats today announced the Solo 4, a $200 set of familiar-looking cans with significant upgrades inside, even if they look almost entirely the same as the Solo 3. At this price, the Solo 4s don’t have any active noise cancellation and,