USB Bluetooth-compatible Adapter Wireless Audio Transmitter Receiver with 3.5mm TX RX AUX Jack for PC TV Home Stereo Car Wired Speaker Feature: 1. Transmitter (TX) mode: wirelessly transmits audio from a non-Bluetooth-compatible TV, home stereo system or CD player to a Bluetooth-compatible headset or speaker. 2. PC audio transmission mode: wirelessly transmit audio from the computer to the Bluetooth-compatible headset or speaker via the USB port, without audio cable. 3. Receiver mode (RX): wirelessly transmits audio from a Bluetooth-compatible phone, tablet or computer to a wired stereo, speaker or headset. Switching method: switch the mode by toggling the tx/rx switch. Specification: Bluetooth-compatible version: 5.0 Bluetooth-compatible profile: A2DP/AVRCP (at receiver mode only) Working range: up to 15m 1 50ft (without any obstacles) Pairing name (at receiver mode): ZF-169 plus Emission mode: red LED light is on Product size: 39*25*12mm Product weight: 5g Packing size: 50*50*15mm Package weight: 20g Pairing method: 1. TX mode: TX mode will automatically search for other Bluetooth-compatible receiving devices (such as Bluetooth-compatible headsets, Bluetooth-compatible speakers, Bluetooth-compatible receivers, etc.). The red light flashes during pairing, and stops flashing after pairing is successful. Use 3.5 audio cable/rca audio cable to connect the product to ATV and other equipment. 2. Computer TX mode: Insert the usb into the usb port of the computer, and it will automatically search for other Bluetooth-compatible receiving devices (such as Bluetooth-compatible headsets, Bluetooth-compatible speakers, Bluetooth-compatible receivers, etc.). The red light flashes during pairing, and it stays on after successful pairing. 3. RX mode: (pairing name: zf-169 plus) find plzf-169 plus' in the Bluetooth-compatible settings of the mobile phone you want to pair. The blue light flashes during pairing, and stops flashing after pairing is successful. Use a 3.5 audio cable to connect the product to an audio device. Note: There may be slight size deviations due to manual measurement, different measuring methods and tools. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. Included: 1 X Bluetooth-compatible Audio Adapter 1/2 X Audio Cables (Optional)