1,retractable headphones 2,CE,ROHS, FCC 3,Direct factory 4,High quality ... ) Low battery capacity indicator9) Forward and Rewind functionABOUT PRODUCT: FM wireless headphone WST-960 CE, ROHS, FCC certification direct the factory ... Voltage: 3V Max consumption current: ≤30MA Receiving Distance: ≤30M retractable headphones WST-960