Audio Bluetooth Transmitter Receiver Two-in-one Wireless Audio Converter With Battery $ 5.44 Product information: Interface: AUX Transmission Rate: 25(Mbps) Effective working radius: 10(m) Bluetooth standard: 5.0 Operating frequency: 24000(MHz) Sensitivity:-91dBm Power supply: rechargeable lithium-ion battery 120MaH Charging: use mini USB cable to charge Charging time: 1 hour Product Size: 50*26 * 6mm Packing list: Bluetooth transmitter receiver host * 1 USB charging cable * 1 3.5 Audio connection cable * 1 Instructions * 1Product Image: