Specifications: Color:Blue/GoldenInput Power: DC 5VMaterial: PlasticBattery: 18650 3.7V  Features: -Wireless bluetooth connection to play, automatic download.-360° stereo sound.-Super loud.-FM radio radio. This machine adopts super-strong radio chip and external antenna, and the radio effect is stronger and clearer.-One click to delete. Delete the downloaded or recorded files yourself.-TF/U disk dual access.-The detachable 18650 battery is convenient and durable.-Power switch: Press the power button to turn the machine on and off.-MP3: Click to play the program in TF card / U disk, click play/pause again.-Previous song: In MP3 mode, tap to play the previous track of TF card/U disk, long press and rewind.Tap to listen to the previous station in radio mode, and play the previous track in bluetooth playback mode.-Next song: In MP3 mode, tap to play the next track of TF card/U disk, long press fast forward.Tap to listen to the next station in radio mode, and play the next track in bluetooth playback mode.-Number keys 0-9: Enter the number in MP3 mode to select the track you want to listen to (for example: enter 28 to select the 28th song).Enter the number in the radio mode to select the broadcast frequency you want to listen to.-Volume rotation: Rotate down to decrease volume and up to increase volume.-FM: Tap to listen to the FM radio broadcast, long press to automatically search for the station.-bluetooth: Tap to enter BT bluetooth connection mode, search to see KK-18 name click to connect, the connection is successful, this machine has voice reminder, you can play bluetooth music.-Recording: In bluetooth playback mode, long press the record button to enter the bluetooth recording. In the radio mode, press and hold the record button to enter the radio recording. In the MP3 player mode, press and hold the record button to enter the external scene recording, press the record button to enter the recording. Content playback, tap again to pause.-Delete: In the playback recording mode, tap the delete button to delete the content being played, long press to delete all the recorded content, and delete the current song in MP3 playback mode.-USB: Insert a USB flash drive to play music.-Headphones: Insert headphones into DND mode.-TF card: insert TF card to play music.-DC 5V: Connect the data cable to charge.  Package included: 1 x Portable radio1 x 18650 battery1 x USB charging cable