Foldable headphones: When not in use, the headphones can be folded for easy storage and carrying
Soft earplug ensures full comfort even if used for long hours
Builtin microphone: play/pause/next/previous button for convenient audio controls
Support Bluetooth mode + FM radio mode + Micro SD Card playback mode + Aux Mode
Builtin rechargeable lithiumpolymer battery.
Charging interface: Micro USB
Working Voltage: DC 5V
The microphone only works in the Bluetooth mode