Description 2 in 1 bluetooth adapter: receive and transmit 2 in 1 No plug and play drivers required; compatible smart bluetooth 5.0 built-in noise reduction high fidelity sound quality; 10 meter stable transmission signal; fully compatible with auto match Input interface: 3.5mm audio Transmission distance: 10 meters Driver: no installation required; Charging time: 1 hour : 5 hours Colour:Black Material:plastic Package Contents: 1pcs x bluetooth transmitter receiver 1pcs x charger cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.