These amazing little earbuds manage to pack in three tiny speakers in each ear and a three way crossover, that’s stuff I don’t even have in my home audio. The frequency response is 10Hz to 17kHz.
These are quite possibly the best headphones you can get that still fit in your pocket. Sure, you could get some Sennheisers or some Bose headphones, but they are going to be large, and they probably still won’t sound as good unless you spend a few grand on them.
For the money, you probably can’t get a better product. They’ve been available for some time now and they cost a mere $399.99.