This device provides convenient, versatile music playback and control across multiple sources. It is designed to simplify listening in cars, homes, and portable setups, with straightforward operation and wide compatibility. Key benefits Hands music control: Use Bluetooth to manage previous/next track, volume, play/pause, and mute from a single unit. Broad format support: Plays MP3, WMA, and WAV files. MP3 bits are 32320 kbps; WAV and WMA up to 1411 kbps, ensuring compatibility with common music files. Seamless source switching: Automatically switches among USB, TF (microSD), Bluetooth, FM, and AUX inputs for uninterrupted playback. Flexible playback controls: USB/card switching, direct song selection, volume control, EQ, play/pause, stop, mute, and shutdown functions. Key features and specifications Bluetooth control: Previous song, next song, volume adjustment, play/pause, and mute are supported via Bluetooth. Music formats: MP3, WMA, WAV. MP3 bitrate range 32320 kbps; WAV/WMA up to 1411 kbps. Auto input switching: Automatically detects and switches among USB, TF, Bluetooth, FM, and AUX inputs. USB/card playback: Supports USB drives and TF/memory cards; directly select songs, and control playback with next/previous, EQ, play/pause, stop, mute, and shutdown. Performance and reliability Robust playback across multiple formats and inputs, designed for stable operation in car, home, and portable audio environments. Quick access to song selection and playback controls, with clear prompts and intuitive operation. Two to three practical use scenarios Incar audio system: Connect via Bluetooth or USB/TF to the car stereo. Use the builtin controls to skip tracks, adjust volume, pause playback, or mute without taking hands off the wheel. The device can autoswitch between USB, TF, Bluetooth, FM, and AUX inputs for continuous listening. Home multimedia setup: Use a USB drive or TF card to store music and play directly. Adjust EQ and playback options to suit the room, with easy direct song selection for queued listening sessions. Portable or gym environment: Pair with a Bluetooth speaker for wireless listening during workouts or onthego. Switch sources quickly between Bluetooth and AUX as needed, control playback, and manage volume from a single interface. Notes The description preserves the provided specifications and functions without adding external details. Physical size and material are not specified in the given information.