This cool black cap has an ingenious addition. On the front there's a sound sensitive graphic equaliser panel that pulses to the beat of surrounding sounds.
A small battery pack sitting unobtrusively in the lining at the back of the hat powers the graphic equaliser panel using 2 button cell batteries.
The hat has a padded head band and adjustable strap at the back so one size fits most.
The T-Qualizer Cap comes with 2 x CR2032 button cell batteries included and another spare set of 2.