Features: and Type C charging wireless receiver has TF card slot, commonly known as an all-in-one musical instrument BT5.1 Instantly connection for wired earphones, and public car normal speakers etc Small compact-and-slim design, lightweight and easy to carry Product functions: adjust volume, switch songs, answer incoming calls, reject incoming calls, listen to music, display sound, power indicator. TF card instantly released, support various sound formats, bluetooth-compatible model or TF card model switch at any time- Specifications: Size: approx 66x30x18 or 2.6x1.18x0.71in Bluetooth-compatible version: BT5.1 Support : HIFI Music Bluetooth-compatible Playback Sistance :within 10Meters or 33ft Material: ABS- Connection: Type C 3.5mm Aux TF slots Color: Black Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1PC x Audio Receiver 1PC x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.