1、This transmitter is equipped with the latest Bluetooth 0 technology, which greatly reduces the power consumption of Bluetooth and provides a better stable connection. 2、The wireless audio adapter is specially designed for the entertainment system on the plane. While enjoying your flight, watching aviation entertainment programs is an ideal companion for Bluetooth headsets. 3、High quality gold plated connectors provide high quality audio, bringing you a 38 foot working range and good performance. Designed to give your headphones the best listening quality when traveling by air. 4、Equipped with a built in lithium battery, it can work for about 7.5 hours. After fully charged, you can enjoy 2 or 3 movies. No need to install any external drivers for Bluetooth TV streaming. 5、The wireless Bluetooth adapter can be used with a 1 or 2 pin 5mm port to add Bluetooth functions to your non Bluetooth devices, such as TVs, PCs, airplanes, and game consoles. It can also be used for fitness equipment. 1 x Adapter1 x USB Cable1 x Manual Item Type: Bluetooth AdapterMaterial: ABS, MetalColour: BlackBluetooth Version: V 5.0 EDRFrequency Range: 2.4GHz- 2.480GHzOutput Power Category: Class 2Bluetooth Mode: A2DP V 1.3Bluetooth Range: Approx. 10m / 32.9ftBattery Capacity: Lithium Battery 180mAh (Shipped with built in battery)Use Time: 7.5 Hours