No need of batteries, comes with a USB charger cable, already charged on unpacked and ready to use. Seeing my reviews are helping other people motivates me to write better and detailed reviews. Esaminati i pezzi ho deciso di crearmi una maschera per la posizione dei fori, in modo da essere il più precisa possibile. This is my first pair of clip shoes so do not have the history to compare. I was a little worried about the sound quality. I do a lot of walking and running. brilliant film and insight on how NWA developed as solo artists afterwards. I am making instructional videos and this is hands over the normal Imac mic. The sandals are way too narrow =/ Battery dies quickly after a full charge, maybe last 4 hours with limited use.