Feature:1. Compact structure, with powerful wireless audio streaming function.2. Put this transmitter/receiver in your backpack or laptop bag and carry it with you.3. Wide compatibility, through the included 3.5mm cable, the transmitter/receiver adapter can be widely used in your computer, laptop, home stereo system, headset, smart phone, Mp3 player, CD player, etc.4. The extremely portable and lightweight wireless audio transmitter/receiver adapter is good wireless audio solution for various situations and purposes.5. It is a Bluetooth audio receiver and a Bluetooth audio transmitter. It can also be used as a Bluetooth sound card, which is easy to switch and operate.Specification:Condition: 100% brand newItem type: Bluetooth Audio Receiver TransmitterMaterial: ABSWeight: Approx. 35g Bluetooth version: 5.0Working distance: Approx. 10M/32.8ftSupply voltage: 5VPairing name (receiver mode): ZF-169PlusBluetooth version: Bluetooth V5.0 EDRBluetooth configuration files: A2DP/AVRCP (receiver mode just)Operating range: up to 15 meters/50 feet (without any obstructing objects)Power mode: USB 5v power supplyOutput connection mode: 3.5mm stereo interfaceInput connection mode: 3.5mm stereo interfaceTransmitter mode: red led light is onReceiver mode: blue led light is onMode switching: Switch the mode by switching the TX/RX switchCompatible: Suitable for Android, for IOS system phones and tablets, and Bluetooth speakers or earphones that support A2DP protocol connection.Package List:1 xBluetooth Audio Receiver Transmitter 1 x Instruction2 x Audio