Item Name: Car Multifunction Mobile Phone HolderSize: 1.1 inchesColor: BlackMaterial: absVoltage: 12-24V£¨V£©£¨V£©Play time: 10hFM transmission frequency: 88.1-107.9MHzBuilt-in lithium battery capacity: 300MHAMaximum size: 16cm(L)*5.6cm(W)*8cm(H)