Description: This audio transmitter and receiver are great wireless audio solutions for various situations and purposes, built in Microphone, handsfree call when you are busy Transmitter mode: wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth-compatible headphones or speakers Receiver mode: wirelessly streams audio from your Bluetooth-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones Switch between transmitter and receiver modes with the simple flick of a switch, connect using advanced Bluetooth-compatible technology and 3.5mm audio cable. The Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc. Specification: Interface: USB 3.5mm audio Transmission rate: 100Mbps Effective working radius: 10m/33 feet Bluetooth standard: 5.0 Working frequency: 2.4Mhz Charging time: 2 hours Battery type: lithium polymer (200mAh) Product size: 44×44×12mm/1.73x1.73x0.47inch Material: ABS plastic Package Includes: 1 Piece Bluetooth Audio Adapter 1 Piece Data Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!