Home Automation Kits descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. 4 Inch Embedded Smart Home Background, Music Player Host Controller Amplifier. Features: 1. Adopt Bluetooth Playback Technology, Faster Transmission Speed, Longer Propagation Distance, Faster Matching Speed, Meet Your Hearing Needs, and Realize Audio Playback. 2. Backlight Color RGB Dimming, M Key Supports Backlight Color Conversion, Long-press Color Changes Slowly, Stop is the Current Color, Short Press the Default Current Color. 3. Support External Memory Card, TF Card Plug and Play, Support U Disk Card Reading, Support MP3, WAV, WMA, FLAC, APE, DTS, AAC, AC3, OGG. 4.AUX Input Playback, Support External Audio Input to the Unit, the Amplified Output Volume Can Reach 20 Level Volume Adjustment. Specifications: Material: Plastic Bluetooth: Yes Inputs: USB Type-B Material: Plastic FM/AM Tuner: No Remote Control: Yes Network: None Outputs: Balanced Out Package Included: 1* Host Controller 1* Remote Control . Products number : SOMONO95883