Puro Limiter circuitry will limit the volume emitted by the BT2200 headphones to 85 dB(A), whether the source is Bluetooth or wired, using the supplied Puro Limiter 3.5 mm auxiliary audio cable. The integrated microphone allows for seamless use with a phone.
Puro Balanced Response means these headphones will deliver studio grade sound. We have carefully and scientifically recreated the sound profile of a perfectly tuned listening room with fantastic loudspeakers into a headphone experience. This is a signature feature of all of our headphones.
Puro Sound Labs – Safe Headphones for Kids and Adults: