Recording Function - Key Recording Instructions: In The U Disk/tf Card Music Playback Mode, Long Press The Mode Button To Record. Long Press The Mode Button Again During Recording. Fm Radio - The External Antenna Signal Is Stronger And Better, The Default Frequency Band Is 87.5mhz-108.0mhz. Bluetooth 5.0 Supports Calls - Stronger Signal, More Stable Mission, Supports 10 Meters Away Infrared Remote Control Operation. Dynamic And Good Sound Quality - The Bluetooth Module Comes With An Amplifier, Loud And Undistorted, With Led Colored Lights That Change With The Frequency Of The Music, The Atmosphere Is Full And The Sound Is Touching. Working Voltage:dc 5v (it Is Recommended To Use A 2a Mobile Phone Fast Charging Head For Power Supply) Working Current:greater Than 1a (the Working Current Is Different For Different Radio Stations And Different Music) Static Working Current:about 40ma (no Music Playing) Output Power:2x3w Bluetooth Connection Name:jq Bt Use Anti-breaking Sound Amplifier Chip, Loud And Undist