inputs.text: not work returned refunded - plugged player macbook pro received popup error \\usb current\\ player would not load googled error tried reset pram1 shut mac2 locate following keys keyboard command option p r need hold keys simultaneously step four3 turn computer4 press hold commandoptionpr keys gray screen appears5 hold keys computer restarts hear startup sound second time6 release keysthis seemed resolve issue no error player mounted laptop copied mp3s player tested briefly headed happily pool pool player headphones worked well however technical difficulty mp3s displayed \\wrong format\\ mp3s exact album played fine 50 songs not play kept stop navigate tiny buttons skip \\wrong format\\ songs decided troubleshoot got home thinking would try reload songs could not connect player laptop got \\usb current\\ error resetting pram several times not resolve issueat loss asked refund luckily within 30 day return period 1 day paying shipping 10 many emails company responsive felt working language barrier said would refunded price player based reviews gambled cheaper unit lost agree reviews save waterproof shuffle waterfi also buy amazoni note anyone never swam music really awesome im looking forward waterfi save happy swimming