i have received the red color boat rockerz 510 i must say this has worth the price sound clarity and quality you can feel the bass with minimal sound distortions at high volumes battery backup is excellent mic quality is good but it ends up capturing background noises like that of fan or traffic horns etc which maybe a little irritating for the listener on the other side comfort wise i wouldnt say this is very good ears start paining after an hour or so also cannot adjust or move th