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: 5.0 Working distance: Approx. 10M/32.8ft Supply voltage: 5V Pairing name (receiver mode): ZF-169Plus Bluetooth version: Bluetooth V5.0 EDR Bluetooth configuration files: A2DP/AVRCP (receiver mode just) Operating range: up to 15 meters/50 feet (without any obstructing objects) Power mode: USB 5v power supply Output connection mode: 3.5mm stereo interface Input connection mode: 3.5mm stereo interface Transmitter mode: red led light is on Receiver mode: blue led light is on Mode switching: Switch the mode by switching the TX/RX switch Compatible: Suitable for Android, for IOS system phones and tablets, and Bluetooth speakers or earphones that support A2DP protocol connection . Package List: 1 x Bluetooth Audio Receiver Transmitter 1 x Instruction2 x Audio