Etekcity Wireless Bluetooth Receiver 4.0, NFC-Enabled Bluetooth Audio Adapter for Music Streaming Sound System, Bluetooth Adapter for Receiver A/V RCA and Car Stereo 3.5mm AUX Input Stream Wirelessly: Add Bluetooth compatibility to devices that dont have Bluetooth! By connecting the Roverbeats Unify Bluetooth Audio Receiver to your high-quality speakers, headphones, home/car stereo sound systems, or any devices with A/V, RCA, and 3.5mm AUX/jack input, you can gain Bluetooth 4.0 compatibility Play Audio Easily: Enjoy streaming media from Amazon Music, Apple Music, Spotify, Pandora, iHeart Radio, Tune IN, and SiriusXM on your iPhone/iPad, Android Phone, PC, tablet, or any Bluetooth-enabled devices. NFC-CAPABILITY: Amplify the audio of your NFC-capable smart devices with a simple hand gesture. Simply touch your smartphone or tablet to the bluetooth adapter and connect. Rapid Recharge: On a full charge, you can enjoy up to 10 hours of operation. No interruptions, no problems. Extend your Bluetooth wireless range up to 33 feet. NOTE: Do not use adapters above 5V to charge the receiver; otherwise the product lifespan may be damaged/shortened. Compact Design: Made to be mini and lightweight, you can easily tuck it away and travel with it. Enjoy 1-year buyer assurance and lifetime support from our US-based Etekcity team!