Work with CAIWEI 3500 Lumens and 4200 Lumens Led Projector Portable Bluetooth Receiver Suitable For Entertainment! Wireless music goes around you. It is compatibe with smartphones and bluetooth electronics, as simple as plugging in a 3.5mm audio jack, you can music and videos freely. The wireless audio receiver with Bluetooth v4.0 lets you get the music wirelessly from audio systems,lets your enjoyment no limit. Features:Control the Listening Experience, play/pause music all from the receiver, and it is portable, perfect for hands-free calling when driving. Long distance transmission. you can receive the bluetooth signal within 10 meters with strong signal. Package Includes:1x Portable Bluetooth transmitter 1x Micro USB charging interface. We ensure that your order will be full tested, well packed and 100% new before shipping it out.