1、Dual interface designed, 2RCA dual audio port, suitable for more devices. 2、Bluetooth 2 can transmit stably, upgrade Bluetooth 2, signal easy to disconnected in the complex interference environment. 3、Compact disc level hifi sound quality and apt‑c encoding and decoding technology enable Bluetooth have compact disc level sound quality, accurately reproduce full audio broadband through Bluetooth transmission, enjoy hifi sound quality. 4、20m long distance transmission, built‑in antenna, support 20 meters long distance, no dead corner connection in living room. 5、More lightweight, more comfortable, smaller, to achieve smaller appearance, let you carry more convenient. 1 x Bluetooth Receiver Transmitter1 x 3.5mm Audio Cable1 x USB Charging Cable1 x Manual Condition: 100% Brand NewItem Type: Bluetooth Receiver TransmitterModel: BT-805Material: ABSColor: BlackSNR: Greater Than 95dBBluetooth Version: 4.2Battery Type: Polymer Lithium BatteryBattery Capacity: 300mAhCharging Time: About 1.5HContinuous Endurance: Greater Than Equal 7HInterface: 3.5mmTransmission Distance: Greater than 15mCharging mode: Micro-USB 5V Power SupplyWeight: Approx. 58gSize: Approx. 6.2x 4.5x 1.2cm/ 2.44x 1.77x 0.47inch