The Tunai Firefly Bluetooth Receiver is a reliable and well-presented product that won\u2019t give out on you after a few months of use. It doesn\u2019t have an internal battery, though, and must therefore be kept connected to a 5V USB port to maintain its charge. Check out our best car accessories list for more great options!\r\n\r\nWhy We Like It - Firefly Bluetooth Receiver\r\nThe Firefly Bluetooth Receiver will switch to your connected phone or headset for a call which is great for people who prefer a soft tone in their ear as opposed to the loudness of their stereo. It comes packaged with an AUX to RCA converter cable and allows for bluetooth 4.0 connectivity to home or car audio systems.\r\n\r\nPerformance\r\nThe Tunai Bluetooth Music Receiver doesn\u2019t contain an internal battery and must therefore be powered by a 5V USB port. Fortunately, most audio devices and car USB ports nowadays have this type of USB power. If your car doesn\u2019t, you can always check out the Charger Ainope Aluminum Charging Compatible to upgrade your car. There is no integrated option on the Firefly for hands free calling and instead will switch over to the phone or headset for the duration of the call.\r\nDesign\r\nTunai Bluetooth Receivers come included with a 34 inch AV RCA converter cable. It\u2019s very compact and can easily fit in your car without being a burden to you while driving, and can be connected to two devices at once. Like the EPAuto Car Trash Storage Pockets, it comes in a variety of colors with matching components and accessories. These colours include black, gold, or red. All components have well-machined metal sleeves and the connections are gold-coated pure copper to minimize sound distortion.\r\nValue\r\nThe Tunai Wireless Audio Bluetooth Receiver is ideal for adding bluetooth connectivity to car audio systems or a home audio system. It\u2019s very reliable, well presented, and comes with high quality cables as mentioned above. There\u2019s no loss of sound quality, even after extended use, so you can play high-quality music out of your car stereo to your heart\u2019s content. This is all thanks to Tunai\u2019s patent-pending sound revitalization technology (SRT). But if you\u2019re looking for something functional and practical out of your car accessories instead, check out the Drop Stop Original Patented Filler.\r\nFirefly Bluetooth Receiver Wrap Up\r\nThe Tunai Car Home Stereo Music Streaming Bluetooth Receiver won\u2019t lose sound quality, even after extended use, thanks to the patent-pending SRT technology. Even when connected to two devices the sound quality remains the same. It\u2019s lack of integrated bluetooth may irk some people, but there\u2019s nothing worse than getting a huge startle from your car stereo while you\u2019re driving.