This document provides instructions for using a power supply product and identifies the functions of its components. The product can be powered by 220V AC electricity or 4 AA batteries, and it features a safe charging function. When using batteries, it is important to pay attention to their polarity and installation direction, avoid mixing different models or old and new batteries, and refrain from using batteries with low power. When fast forwarding or rewinding the tape, it is recommended to press the stop button after the tape has finished to avoid damaging the device. If the device is not used for a long time, it is advised to remove the batteries and unplug the power adapter. It is also cautioned not to clean the device with organic solvents, expose it to excessively cold, hot, or humid environments, or disassemble or drop it arbitrarily. The playback time should not exceed the maximum repeat time of the device to prevent covering previous sounds. When using headphones, adjust the volume to a suitable level to avoid damaging hearing.
