Every idea starts with a problem. Ours was simple: good and cool earphones are all too expensive. We were trainees when one of us lost his expensive earphones on a long commute. The cost of getting a new one was high so he got a pair of TWS earphones which companied him for 3 months of long commute, complaining about its sound quality and non-eye-catching design. (We cannot blame him for that as we know how crazy he, as a music-lover, would be about music and how empty his wallet was.)