Features:

[Micro SD card playback / FM Radio]: Supports Micro SD card slot extension (maximum 32GB). Just insert a Micro SD card loaded with your favorite songs, no need of mobile phones or other auxiliary devices, you can directly enjoy music. Besides, you can transfer files through the USB connector anytime and anywhere.

[57mm Titanizing Diaphragm for quick response]: Adopts the all titanizing 57mm diaphragm to enhance the resolution, lower the THD(Total Harmonic Distortion) and make the sound more dynamic, swift, which ensures you hear even the slightest details and enjoy every wonderful moment.

[Support Amazon Web Services / Voice Control]: Bluedio headphones will becomes the helper for your daily life. Support Amazon Web Services, download Bluedio App and access your AWS account to listen tremendous amount of songs, inquiry weather, news, agenda etc.And you can also break in your headphone via APP.

[Bluetooth / Wired Double Modes]: Not only a wireless earphone but also a wired headphone(with 3.5mm audio cable), you can still to enjoy music without interruption when the battery runs low.

[Bluetooth 5.0 / Foldable]: We specially strengthen the telescopic arm to ensure that it can bear over 5 thousand times stretching and bending. The fold-able design to save more space and easy to carry. Bluedio Headphones Superior adopts Bluetooth 5.0 Chip, which can transmit data at high transmission and bring you smooth music experience.