Specifications:The bluetooth-compatible adapter is the combination of music receiver and transmitter.It is designed with a LCD display screen.It is plug and play and no external driver is required.With bluetooth-compatible 5.0, it has stable 10 meters transmission space.Item Name: bluetooth-compatible AdapterMaterial: PlasticInput Voltage: DC/5VInput Interface: 3.5mm AudioTransmission Distance: 10 MetersFeatures: Plug and Play, 2 in 1, StableSize: 6.03cm x 2.55cm x 0.88cm/2.37" x 1" x 0.35" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Adapter1 x 3.5mm Audio Cable1 x User Manual