Supports direct signal switching. Compatible with USB and TF cards. Features Bluetooth 5.0 for wireless music playback after pairing with mobile phones. Supports switching between USB, TF, Bluetooth, FM, and LINE inputs. Equipped with MP3, WMA, and WAV lossless audio decoding. Supports USB/TF card switching, as well as PREV, NEXT, fast forward, fast rewind, volume control, EQ adjustment, play/pause, stop, single repeat, mute, shutdown, and direct track selection. Bluetooth remote control supports PREV, NEXT, volume, EQ, play/pause, mute, and power-off functions. Compatible with FAT16 and FAT32 file systems. Supports MP1 Layer 3, MP2 Layer 3, and MP3 Layer 3 audio formats. Supports MP3 bitrates from 32 to 320 Kbps. Includes power-off memory function to retain the last played track and volume setting. Note: Appearance may vary slightly between batches; functionality remains unaffected. Material: Plastic + Metal. Color: Black. Package includes: 1 x MP3 Decoder Board, 1 x Remote Control. Other accessories are not included. Note: Lighting conditions and display settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.