Item Type: Bluetooth Transmitter Receiver _x005F_x000D_ Material: PVC_x005F_x000D_ Bluetooth: 5.0_x005F_x000D_ Transmission Distance: Approx. 10m / 33ft_x005F_x000D_ Working Time: More Than 5 Hours_x005F_x000D_ Charging Time: About 1 Hour_x005F_x000D_ Input or Output Connection: 3.5mm Stereo Interface_x005F_x000D_ Built in Lithium Battery: 220mAh (included) 1[V5.0] Bluetooth adapter has Bluetooth 5.0 chip, faster transmission speed, more stable connection and lower power consumption. 2[One Key Control] 2 in 1 Bluetooth transmitter receiver one key operation, convenient and quick, switch on and off, answer and hangup. 3[For Car Speaker] When driving, connect the mobile phone to the B12S via Bluetooth, and plug the 3.5mm cable into the car to enjoy music. 4[R Mode] R mode changes to Bluetooth speaker in seconds, traditional speaker is connected to AUX or RCA speaker port. 5[Basic Parameters] Working Time: More than 5 hours; Charging Time: About 1 hour; Input or Output Connection: 3.5mm stereo interface. 1 xBluetooth Transmitter Receiver 1 x Manual 1 x Cable