Celebrat A23 Bluetooth Headphones stylish and functional wireless headphones with good powerful sound. They are powered by a built-in battery, which is charged using a USB-micro USB cable (cable included).You can listen to music via Bluetooth (a signal at a distance of up to 10 m), from a microSD memory card, FM radio, you can connect headphones to the music player via an audio cable (cable included). Headphones also have a built-in microphone and can be used for talking on the phoneTo switch tracks, increase / decrease volume, answer a call, the control buttons are located on the headphones. There is also a color indicator.Headphones are securely fixed to the head with a soft vertical bow connecting their cups, so they can be used while jogging or other physical activity. The size of the brackets is adjustable.