Product description:[Receiving Function]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.[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.[Hands-free Call]One button to pick up call without ears. Hands-free call set your hands and ears free to make sure safety when driving. Mobile navigation is clearer when car audio system turn to Bluetooth-enabled speaker in a minute.[Endurance Time]With built-in lithium 170 MAH battery, it offers 8 hours of working 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.B3501 Specification:.Model: B3501.Bluetooth Version: 2.1.Transmission Distance: =10m ( free space).Color: Black.Bluetooth Receiver Size: Approx. 4.4 * 4.4 * 2cm / 1.73 * 1.73 * 0.79in.Bluetooth Receiver Weight: Approx. 16g / 0.56ozPackage List:1 * Bluetooth Receiver1 * Audio Cable1 * USB Cable1 * User ManualBrand : OtherCompatible with : All VehiclesAccessory Type : Bluetooth Car Kits