The main function: Download App Link control can be controlled 1. Dual decoding supports MP3 / WMA / WAV / FLAC / APE format; 2. Support Bluetooth call function; 3. With recording function; 4. Display with a digital tube; 5. Support MMC/SD/MMA and other cards to support USB interfaces (U disks); 6. Power off memory function, memory disconnection mode, volume, track; 7. Support 5-10 meters away from infrared remote control operation; 8. Support the external sound source input line in; 9. Support the radio FM, reward frequency band (87.5MHz -108.0MHz); 10. Key: Four keys, VOL- / Auto / Vol+ / Mode; Recording function description: 1. Press the Mode button to start recording, and press the Mode button again to cancel the recording function again; 2. Press Play/PAUSE button to play recording files; 3. When recording, you need to connect a storage device than you need to connect, such as: U disk or TF card; Key operation detailed: VOL-button (the previous song/volume decreases): VOL-short pressing as the previous song in MP3 state, long press to the volume decrease; short pressing in the FM state to adjust a desk number; under Bluetooth function, under Bluetooth function The short press is a Bluetooth, and the long press is reduced. Auto button (play/pause): AUTO short press is played/pause in MP3; short pressing/pause in FM state, long press to automatic closing table coexisting table; short -pressing/suspension under Bluetooth function under the function of Bluetooth function is played/pause Essence VOL+button (the next song/volume increases): Vol+short pressing as the next song in MP3 state, long press to increase the volume; short press to a desktop in the FM state; short press under Bluetooth function, short press under the function of Bluetooth function; For the next song of Bluetooth, long press to reduce the volume. Mode button: Switch between USB / SD / FM / Audio input / Bluetooth function. Package Included:1x Wireless Bluetooth MP3 Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 0.1-2cm measuring deviation due to manual measurement.