F21 Radio Bluetooth 5.0 Speaker Portable Mini Radio For The Elderly HiFi TF MP3 Music Player Support Recordin Headphones Play First, functional characteristics Stylish in appearance, small and delicate, easy to carry, it is a good helper for home, office, outdoor travel, sports, leisure, entertainment and learning. Using high quality and high sensitivity speaker, beautiful sound quality, with volume control switch, can meet the needs of listening to different programs. Support TF card //U disk to play MP3/ Bluetooth /WAV format music, and support FLAC and APE lossless music decoding function. Built-in high sensitivity FM radio, frequency 70-108MHz. Support external high-performance large-capacity rechargeable polymer lithium battery 750mAh. The machine adopts low power consumption and high power amplifier. 2. Function definition 1. Recording key: In the U disk /TF card music playing mode, long press the recording key, you can record, during the recording process, press the key again to end the recording; Short press the key, you can play the U disk /TF card recording (Note: The U disk or TF card needs to be connected to the network when recording, as a storage device. Full mode recording is supported. In U disk and TF card mode, record MIC sound; Record the sound of the machine in Bluetooth and radio mode). 2. Mode key: Press this key to switch modes. In radio mode, press and hold the radio to automatically search for the radio 3. Previous song: In MP3 playing mode, short press the song key to switch to the previous song, and long press to rewind; In radio mode, short press the song key to switch to the previous channel; 4. Play/pause/Delete key: In MP3 mode, press the key to switch between play and pause; In music playing mode, long press the delete key to start deleting, and short press the delete key again to confirm deleting; Or do not press the button within 5 seconds to exit the delete function. 5. Next song: In MP3 playing mode, short press the song key, switch to the next song, long press fast forward; In radio mode, short press the song key to switch to the next channel. 6.[1-0] Digital key: In MP3 playback mode, you can select the track you want to listen to through the combination of single key and number; Enter the number in radio mode and select the desired radio frequency. 7. [] Headphone jack: Insert headphone into Do not disturb mode; Enjoy listening alone. 8. [USB] U disk jack: Insert U disk, you can play U disk music tracks. 9.DC5V charging interface: You can use the charging cable attached to the machine to charge, you can also use the mobile phone with USB interface to charge, you can also use the USB interface to connect the computer to charge. 10. [TF card] slot: Insert TF card to play music tracks in TF card. 11. [-VOL +] Volume increase/decrease Wheel switch: The volume change in the [-VOL] direction decreases At least until the volume is turned off, dial in the [VOL] direction to increase the volume. 12. ON/OFF switch: ON is ON/OFF is off, and ON is on in the ON direction. Close in the OFF direction Main technical index Product model: F21 Speaker configuration: 1.5 inch dual magnetic speaker Rated power: 3W Frequency response: 100Hz-18KHz Bluetooth version: 5.0 Battery usage: lithium polymer battery 750mAh Input power: DC 5V/1A Body size: L104*W26*H61MM Basic functions: BT/TF/USB/FM/ Digital Songs on Demand/lossless music Play/Full-mode recording/one-click deletion function. Basic functions: FM radio support Campus radio/frequency range: 70-108MHZ [] Headphone jack /[-VOL +] volume knob Packing list: Host *1, TYPE-C interface charging cable *1, lashing rope *1, manual *1 Product specifications and accessories Main technical specifications Product model:F21 Horn configuration:1.5 "dual magnetic speaker Rated power:3W Frequency response:100Hz-18KHz Bluetooth version:5.0 Battery usage:Lithium polymer battery 750mAh Input power supply:DC 5V/1A Body size:L104*W26*H61MM Basic function: BT/TF/USB/FM/Digital Song Demand/lossless music Play/Full-mode recording/one-click deletion function. Basic function: FM radio supports campus radio/frequency range: 70-108MHZ [] Headphone jack / [-VOL +] volume knob Packing accessories: Host Computer TYPE-C interface charging cable Lashing cord Manual Warranty card Certificate Thank you for buying and using the F21 multimedia player produced by our company. I hope it will bring you convenience and fun in your life. In order to enable you to understand the various functions of this machine and be proficient in the use, please read this manual in detail before using it. (if there are any typographical errors or translation errors, the majority of users will understand that when the contents are changed, they will not be notified without prior notice.) I. function