First, a little background: Mantis was originally debuted back in January of this year under the different and more female-targeted name Jewelbox, referencing a major change in its design relative to Ladybug: the speaker-containing wings of this unit open to reveal a large, flat surface that could have been hollowed out to hold jewelry. On a positive note, when Mantis is closed, it’s the fanciest speaker Vestalife has ever produced: whether…