The 'Basslet' puts a haptic subwoofer on your wrist
 

Bass, it's the (musical) final frontier. By that, I mean it's the part of music that needs to be done right. Too much and songs sound like a mess. Too little, and there's no guts. Enter Basslet, from Lofelt. In a nutshell, Basslet looks like a watch,...

https://www.engadget.com/2017/01/06/...on-your-wrist/