Portable speaker HAVIT HV-SQ120BT 50W RGB Black

4. Audio Recording
Insert a Micro SD card or USB flash drive. To start recording, press and hold the "REC" button. To stop recording or play back, briefly press the REC button.

5. Controlling other speaker functions
5.1. Switch between modes by briefly pressing the "Mode" button (BT, FM, USB, Micro SD, AUX). To enable the speaker to play audio files from a Micro SD card or USB flash drive, simply insert them into the device. The gadget can be connected to the speaker using the included double audio cable.
5.2. Select the backlight mode using the "Light Button". 
5.3. To adjust the bass effect for the microphone, briefly press the BASS button, and for the BASS speaker, you need to press and hold. Press the "M.VOL" button on the panel and turn the knob to the right to increase the volume, and to the left to decrease it. 
5.4. To adjust the echo effect, briefly press the "ECHO" button, and for the "Echo" speaker, you need to press and hold. Press the "M.VOL" button on the panel and turn the knob to the right to increase the volume, and to the left to decrease it. 5.5. To adjust the delay effect of the microphone, briefly press the "Delay" button, and for the speaker, press and hold the "Delay" button. Press the "M.VOL" button on the panel and turn the knob to the right to increase the volume, and to the left to decrease it. 5.6. To adjust the high-frequency effect for the microphone, briefly press the TRE button, and for the speaker, press and hold the TRE button. Press the "M.VOL" button on the panel and turn the knob to the right to increase the volume, and to the left to decrease it.

6. Connecting two SQ120BT speakers (TWS mode)
6.1. Turn on the speakers. To enter wireless mode, briefly press the power button. DSTU 6.2. Connect one speaker to your device via Bluetooth; activate wireless connection mode for the other. Press and hold the Play/Pause button on both speakers simultaneously.

Recommendations and Disclaimers:
- Charge the speaker at a power level no higher than 15V, 3A, using the included USB-C cable.
- Battery capacity will decrease over time with use of the speakers.
- While charging, the charging indicator k will glow green, and will turn off when charging is complete. During charging, the indicator on the screen will glow and flash, and will remain lit when charging is complete.

Avoid contact with liquids.
- Keep the speaker away from heat sources.
- Do not block the device's ports.
- Using the maximum volume level for an extended period may affect your hearing and the lifespan of the device.
- Do not subject the product to mechanical damage or disassemble it.

The product has a 1-year warranty.