Fangrui Product Details Bluetooth 5.0 Two-in-one Receiver And Transmitter Rx: You Can Easily Upgrade Ordinary Speakers, Power Amplifiers, And Car Speakers To Devices With Bluetooth, Enabling Wireless Bluetooth Operation On Mobile Phones! Tx: , Computers, And Projectors Can Be Upgraded To Devices With Bluetooth For Remote Operation! Humanized Led Indicator Light Makes The Operation Easier To Understand, And The Fool-like Operation Is Clear At A Glance. 3.5mm Audio Interface, Application Range! Hands-free Calling, One-click Answer, While Driving! Built-in 150ma Battery, Super Long Battery Life, H, More Worry-free Use! The Product Does Not Require Drivers Or App! Color: Black Material: Plastic Package Contents: 1 X Charging Cable 1 X 3.5 Audio Cable 1 X 3.5 Audio Head Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.