Bluetooth Receiver Stereo Audio Music receiver Adapter Hands-free & Wireless EQ sound effect receiver for Sound home stereo audio device Car kits NOTE:After you purchase,Please make tags according to pictures and write it down: JAZZ, POP,CLASSIC,BASS,THANKS.ENABLE ANY AUDIO AND BLUETOOTH FROM DEVICE: Open up a this wireless Bluetooth receiver, Just plug into an AUX port(3.5mm audio input port),And then can be directly connected to your device such as car, phone, USB speaker,audio equiment,power amplifier and etc. SMALL, LIGHTWEIGHT AND EASY TO USE: It is work, when the indicator shining,if you need the cell phone connect the receiver automatically, just turn on the Bluetooth of the cell phone first, and then turn on the Bluetooth receiver,Music or call switching, free and relaxed. Super clear and flow conversation effect,Whatever the case, this mini protable Bluetooth Receiver is a quick and easy fix - simply plug into any device with AUX input port, and stream to your heart's content RAPID RECHARGE WITH 10 HOURS PLAY TIME:Only need 1.5 hours to charge it fully,In other words, that's 8-10 full hours of playing any audio you choose. It's perfect for travel - hook it up to your car stereo system for your next cross-country road trip, or to your portable headphones,USB speakers, Bluetooth speakers when you're out and about. Get the full awesomeness of Bluetooth wherever you go. UNIVERSAL COMPATIBILITY: Bluetooth 4.0 Receiver compatible with smartphones and Bluetooth electronics; ideal for home or vehicle audio systems or any audio systems,Simply make sure your device has AUX input port (3.5mm audio input port) EQ SOUND EFFECT: Upgrade New 4.0 Bluetooth technology, increased the EQ sound effect and Hands-free calling,( CLASSIC,BASS,JAZZ,POP) give you a wonderful experience and use. NOTE:When you get the product, if there is no electricity, please charge it in time inserting the 5V USB. If the red LED doesnt light when you charging, please long press the button, red LED light.( IF the Red LED doesnt light when you charge, displayed in charge also)It can be used for charging 1 hour.