MT0284B Features Foldable design provides great convenience during carrying and storage Features FM radio and card reader functions Supports voice play Seamless switch between music and calls High speed USB port General Specs Brand & Model 361B  Type On-ear headset Color Black Frequency Response 22Hz-1800Hz Standby Time 240 h Talk Time 13 h Compatibility Cell phones，etc Package Details Weight: 211.86 g Size: 12*12*8.5 cm