H-3D Bluetooth Receiver is specially designed for car stereo systems and home audio system which can change the traditional car systems and home audio system into Bluetooth-enabled ones. It's compatible with Bluetooth-enabled Smart Phones， laptop， tablet， etc. What's more， 3D music surrounded effect gives people audio feast with high quality and stereo audio transmission. With this product， you can greatly enjoy music from your phone， laptop， tablet wireless. H-3D Features:[Receiving Mode]It can change the traditional car systems and home audio system into Bluetooth-enabled ones. After the Bluetooth Receiver is connected with speaker with 3.5mm audio cable， you can enjoy music from your phone wireless. [3D Music Surrounded Effect]With high quality stereo audio transmission， the Bluetooth-enabled， speakers will present you different audio experience and feast.[Strong Compatibility] It's compatible with Bluetooth-enabled Smart Phones， laptop， tablet and almost all Bluetooth-enable Audio Devices. Standard 3.5mm audio socket and cable enable to connect to most modern audio device.[Endurance Time]With built-in lithium 800MAH battery， it offers 6-8 hours of working time and it needs 5 hours of charging time.[Easy Controlling]Easy to pair with Bluetooth speaker with simple button， you can enjoy music from the phone in a minute. Simple for children or the older. No need to install any apps.H-3D Specification:Bluetooth Version: 2.1 +EDRTransmission Distance: >=10m ( free space)Charging Time: 5 hoursWorking Time: 6-8 hoursBattery Capacity: 800MAHColor: BlackBluetooth Receiver Size: Approx. 11 * 5.8 * 1.8cm / 4.33 * 2.28 * 0.71inBluetooth Receiver Weight: Approx. 56g / 1.98ozPackage Size: Approx. 11.7 * 6.5 * 4.6cm / 4.61* 2.56 * 1.81inPackage Weight: Approx. 144g / 5.08ozH-3D Package List:1 * H-3D Bluetooth Receiver1 * Audio Cable 1 * USB Cable1 * English User Manual